Outcomes of endoscopic transsphenoidal surgery for Cushing’s disease

Abstract

Background

Transsphenoidal surgery (TSS) to resect an adrenocorticotropic hormone (ACTH)-secreting pituitary adenoma is the first-line treatment for Cushing’s disease (CD), with increasing usage of endoscopic transsphenoidal (ETSS) technique. The aim of this study was to assess remission rates and postoperative complications following ETSS for CD.

Methods

A retrospective analysis of a prospective single-surgeon database of consecutive patients with CD who underwent ETSS between January 2012–February 2020. Post-operative remission was defined, according to Endocrine Society Guidelines, as a morning serum cortisol < 138 nmol/L within 7 days of surgery, with improvement in clinical features of hypercortisolism. A strict cut-off of < 50 nmol/L at day 3 post-op was also applied, to allow early identification of remission.

Results

A single surgeon (MJ) performed 43 ETSS in 39 patients. Pre-operative MRI localised an adenoma in 22 (56%) patients; 18 microadenoma and 4 macroadenoma (2 with cavernous sinus invasion). IPSS was carried out in 33 (85%) patients. The remission rates for initial surgery were 87% using standard criteria, 58% using the strict criteria (day 3 cortisol < 50 nmol/L). Three patients had an early repeat ETSS for persistent disease (day 3 cortisol 306-555 nmol/L). When the outcome of repeat early ETSS was included, the remission rate was 92% (36/39) overall. Remission rate was 94% (33/35) when patients with macroadenomas were excluded. There were no cases of CSF leakage, meningitis, vascular injury or visual deterioration. Transient and permanent diabetes insipidus occurred in 33 and 23% following first ETSS, respectively. There was one case of recurrence of CD during the follow-up period of 24 (4–79) months.

Conclusion

Endoscopic transsphenoidal surgery produces satisfactory remission rates for the primary treatment of CD, with higher remission rates for microadenomas. A longer follow-up period is required to assess recurrence rates. Patients should be counselled regarding risk of postoperative diabetes insipidus.

Peer Review reports

Introduction

With an estimated annual incidence of 1.7 per million [1], Cushing’s disease is rare. Untreated, it poses serious complications including osteoporosis, hypertension, dyslipidaemia, insulin resistance, and hypercoagulability [2] and is associated with a 4.8 fold increase in mortality rate [3,4,5]. Patients who are in remission from CD have a mortality rate which decreases towards (although not reaching) that of the general population [6]. Endoscopic transsphenoidal surgery (ETSS) offers patients potential remission from Cushing’s disease, although long term surveillance is required as recurrence rates range from 5 to 22%% [7,8,9,10,11,12].

Since the first report in 1997 [13], the selective removal of an adrenocorticotropic hormone (ACTH)-secreting pituitary adenoma by endoscopic transsphenoidal surgery has gained popularity as the first line treatment for Cushing’s disease. The primary goal of ETSS treatment in Cushing’s disease is to produce disease remission and to provide long-term control, while minimising complications. Remission rates are dependent on tumour size, preoperative MRI, cavernous sinus invasion, intraoperative visualisation of the tumour and pre- and postoperative ACTH and cortisol concentration [11]. Several studies also report pituitary neurosurgeon experience as a major factor for operative success [21415].

Reported remission and recurrence rates after TSS for CD vary widely according to the criteria utilised to define remission [11], and in some studies due to limited patient numbers or short follow-up periods. Indeed, there is no clear consensus on how best to define post-operative remission; an early morning serum cortisol concentration < 138 nmol/L (5μg/dl) within 7 days of TSS is quoted in the 2015 Endocrine Society Clinical Practice Guideline as indicative of remission [16]. A more strict day 3 cut-off of 50 nmol/L (1.8 μg/dl) has been reported in paediatric studies [17], and also included in the Endocrine Society Guideline [16]; the literature suggests this cut-off is associated with remission, and a low recurrence rate of approximately 10% at 10 years [14]. The main objective of this study was to assess the outcomes of endoscopic transsphenoidal surgery for Cushing’s disease in a tertiary pituitary centre; remission using two widely accepted criteria [16], recurrence and postoperative complications.

Methods

Study design

This is a retrospective analysis of a prospectively-maintained database of patients operated on by a single neurosurgeon (MJ), via image-guided endoscopic transsphenoidal approach for Cushing’s disease. Patient data was gathered over 8 years (January 2012 to February 2020) and identified from the institution’s prospective database. Clinical and biochemical data during the follow-up period was reviewed. Approval was granted by the Hospital Audit Committee.

Study population

Patients were screened for Cushing’s syndrome by the presence of typical clinical features, together with failure to adequately suppress cortisol to < 50 nmol/L following overnight dexamethasone suppression test (ONDST) and/or elevated late night salivary cortisol (LNSF) concentration and/or elevated 24 h urinary free cortisol measurements. As per standard guidelines, Cushing’s disease was diagnosed on the basis of elevated serum ACTH measurements, along with confirmatory hormone responses to peripheral corticotropin releasing hormone (CRH) test and inferior petrosal sinus sampling (IPSS). Patients with previous TSS prior to the study period were excluded.

Surgical procedure

A single neurosurgeon subspecialising in endoscopic pituitary and anterior skull base surgery, M.J, carried out all ETSS surgical procedures. The surgical technique has been described in detail in publications by Cappabianca et al. (1998, 1999) and Jho et al. (1997, 2000, 2001) [1318,19,20,21]. In summary, the procedure consists of a binostril endoscopic transsphenoidal approach. A selective adenomectomy was performed on patients with adenomas noted on pre-operative MRI. In cases of negative pre-operative MRI, exploration of the pituitary gland was performed. To confirm the diagnosis of ACTH-secreting adenoma or hyperplasia, all specimens removed underwent histopathological and immunohistochemical staining for pituitary hormones.

Postoperative assessment

Patients received empiric oral hydrocortisone on day 1 and on the morning of day 2 post-operatively, prior to assessment of 0800 h serum cortisol on day 3. A blood sample for serum cortisol was drawn at 0800 h on the morning of day 3, if clinically stable, prior to administration of hydrocortisone. The Endocrine Society Clinical Practice Guideline define post-operative biochemical remission as morning serum cortisol < 138 nmol/L (5μg/dl) within 7 days postoperatively [16], ‘standard criteria’. In our institution, we also apply a biochemical cut-off of < 50 nmol/L (1.8 μg/dl) at day 3 postoperatively to allow early indication of biochemical remission, ‘strict criteria’. If serum cortisol on day 3 is 50–138 nmol/L, serial measurements are taken daily to determine if cortisol will fall further, and assessment for improvement/resolution of clinical sequalae of hypercortisolaemia made (such as improvement in blood pressure or glycaemic control), before repeat endoscopic transsphenoidal surgery is considered.

Transient cranial diabetes insipidus (DI) was defined as the development of hypotonic polyuria postoperatively requiring at least one dose of desmopressin [22], which resolved prior to discharge. Permanent DI was confirmed by water deprivation test according to standard criteria [23]. Thyroid stimulating hormone (TSH) deficiency was defined by low fT4 with either low or inappropriately normal TSH. Growth hormone (GH) deficiency was confirmed using either Insulin Tolerance Test or Glucagon Stimulation Test [24]. Gonadotrophin deficiency was defined in premenopausal women as amenorrhoea with inappropriately low FSH and LH concentration, and in postmenopausal patients as inappropriately low FSH and LH concentration.

Recovery of hypothalamic-pituitary-adrenal axis was assessed by short synacthen (250 μg) test or insulin tolerance test 3 months post-operatively, and every 3–6 months thereafter in cases of initial fail or borderline result. Patients were assessed annually for recurrence of Cushing’s disease, recurrence was defined by failure to suppress cortisol to < 50 nmol/L following an 1 mg overnight dexamethasone suppression test, an elevated late night salivary cortisol (LNSF) or urinary free cortisol (UFC) in patients no longer taking hydrocortisone.

Laboratory analysis

Prior to 2019, serum cortisol was measured using a chemiluminescent immunoassay with the Beckman Coulter UniCel Dxl 800. Intra-assay CV for serum cortisol was 8.3, 5 and 4.6% at concentrations of 76, 438 and 865 nmol/L, respectively. From January 2019 onwards, serum cortisol was measured using Elecsys® Cortisol II assay on the Roche Cobas e801; intra-assay precision for serum cortisol was 1.2, 1.1 and 1.6% at concentrations of 31.8, 273 and 788 nmol/L, respectively.

Statistics

Data are expressed as median (range) and number (%). The Fishers Exact test was used to compare categorical variables between groups. All p-values were considered statistically significant at a level < 0.05. Statistical analysis was performed using GraphPad Prism 8 statistical software (GraphPad Software, La Jolla, California, USA).

Results

Demographics

Forty-three endoscopic transsphenoidal procedures were performed in 39 patients. Demographics are summarised in Table 1. Median (range) age was 37 years (8–75), 30 were female. Median (range) duration of symptoms was 24 months (6–144), 72% (28/39) had hypertension, and 28% (11/39) had type 2 diabetes.

Table 1 Summary of demographics and post-operative outcomes

Preoperative imaging and IPSS

Pre-operative MRI localised an adenoma in 22 (56%) patients; 18 microadenoma and 4 macroadenoma (2 with cavernous sinus invasion). No adenoma was identified in 17 patients (44%). IPSS was carried out in 33 (85%) patients.

Postoperative remission

Post-operative outcomes are summarised in Table 1 and Fig. 1. Using standard criteria (0800 h serum cortisol < 138 nmol/l within 7 days of operation and improvement in clinical features of hypercortisolism), postoperative remission rates for initial surgery were 87% (34/39) for the entire group and 89% (31/35) when patients with macroadenomas were excluded, Fig. 1. Three patients had an early repeat ETSS for persistent disease; day 3 serum cortisol ranged from 306 to 555 nmol/L and interval to repeat ETSS from 10 days–3 months. When the outcome of early repeat ETSS was factored in, overall remission rate was 92% (36/39) overall, and 94% (33/35) when patients with macroadenomas were excluded.

Fig. 1
figure1

Schema of patients who underwent ETSS. *Day 3 cortisol was not measured in one patient due to intercurrent illness requiring treatment with intravenous glucocorticoids

Using strict criteria of early remission (day 3 serum cortisol concentration < 50 nmol/L), postoperative remission rates were 58% (22/38) overall, and 62% (21/34) excluding macroadenomas. Including the three patients with early repeat ETSS, remission rate was 61% (23/38) overall, and 65% excluding macroadenomas (22/34). Day 3 cortisol was not measured in one patient due to intercurrent illness requiring treatment with intravenous glucocorticoids.

Eleven patients (28%) had a cortisol measurement between 50 and 138 nmol/L on day 3, seven of whom had received metyrapone therapy prior to ETSS. Six patients had serial measurements of 0800 h cortisol up to a maximum follow-up of 14 days post-op, serum cortisol concentration fell after day 3 in all six patients. Ten (91%) were glucocorticoid-dependent at 3 months based on synacthen/ITT; 0800 h cortisol had fallen to < 50 nmol/L in six patients.

Predictors of remission

No statistical difference was found in the rates of remission in those patients with or without tumour target on preoperative MRI, using either strict criteria for remission (12/21 target vs 10/17 no target, p > 0.99) or standard criteria (19/22 target vs 15/17 no target, p > 0.99). Similar results were found when the four patients with macroadenoma were excluded.

Persistent disease

Five patients (13%) had persistent hypercortisolaemia after the initial endoscopic transsphenoidal surgery (Table 2). Three patients underwent a repeat early endoscopic transsphenoidal surgery, Fig. 1. Remission rate after repeat early ETSS was 67% (2/3) using standard criteria, and 33% (1/3), using the strict criteria. Of the patients with persistent disease following repeat ETSS, one received radiosurgery, while the other has been commenced on medical therapy, with a view to refer for radiotherapy.

Table 2 Outcome of five patients with persistent hypercortisolaemia after initial ETSS

Postoperative complications

The rate of transient diabetes insipidus after first ETSS was 33% (13/39), while permanent diabetes insipidus occurred in 23% (9/39). Postoperatively, there were five cases of new thyroid stimulating hormone deficiency (13%) and four cases of gonadotrophin deficiency (10%) (in pre-menopausal females). There were no cases of postoperative CSF leak, no cases of meningitis and no visual complications. There were no other complications.

Recurrence

No patients were lost to follow-up. Over a median (range) duration of follow-up of 24 (4–79) months, one patient had recurrence of Cushing’s disease. Pre-operative MRI had shown a macroadenoma; serum cortisol on day 3 after the initial ETSS was 71 nmol/L, which fulfilled standard criteria for remission, but not the more strict criteria. The patient underwent a second ETSS 13 months later. No tumour was visible intra-operatively so no tissue was removed, day 3 serum cortisol concentration was 308 nmol/L and the patient was commenced on a trial of metyrapone.

Recovery of the hypothalamic-pituitary-adrenal axis

Recovery of the hypothalamic-pituitary-adrenal axis occurred in nine patients (27%), at median 13 (3–27) months post-operatively. There was no statistical difference in rates of recovery of HPA axis in patients with day 3 cortisol < 50 nmol/l, and those who only passed standard criteria for remission (< 138 nmol/l) [7/20 (follow-up 25 (3–59) months) versus 2/11 (follow-up 16 (3–79) months) respectively, p = 0.43]. One patient died 5 weeks post-operatively; post-mortem revealed bilateral haemorrhagic adrenal necrosis.

Discussion

Reported remission rates following ETSS in patients with Cushing’s disease (CD) vary widely, predominantly due to differences in criteria used to define remission [11]. There is no uniform consensus on the criteria used to define ‘remission’, with institutions using a combination of biochemical and clinical criteria; this makes comparing surgical outcome studies challenging. The normal corticotroph cells of the pituitary gland are suppressed due to sustained hypercortisolaemia, therefore following successful removal of the ACTH-secreting adenoma, serum ACTH and cortisol concentrations should fall postoperatively. A morning serum cortisol concentration < 138 nmol/L (5 μg/dl) within 7 days of ETSS is usually indicative of remission, and this biochemical cut-off is quoted in the Endocrine Society Clinical Practice Guideline [16], and many surgical outcome studies [81125]. Other studies have applied a more strict serum cortisol cut-off of < 50 nmol/L (1.8 μg/L) at day 3 postoperatively to allow early indication of biochemical remission [101126,27,28]; the literature suggests this cutoff is associated with remission, and a low recurrence rate of approximately 10% at 10 years [14]. Our practice is to apply this latter approach; if serum cortisol on day 3 is 50–138 nmol/L, serial measurements are taken daily to determine if cortisol will fall further, and assessment for improvement/resolution of clinical signs of hypercortisolaemia made, before repeat endoscopic transsphenoidal surgery is considered. It is important to ensure that serum cortisol has reached a nadir, before further intervention is considered.

In this single-centre single-surgeon study, we report two very different remission rates using these two widely accepted criteria. Our remission rate, including those patients who had an early second ETSS, using standard guidelines, is 92%, on par with other larger studies [78112529]. When patients with corticotroph macroadenomas were excluded, the remission rate was even higher at 94%. In comparison, when we applied the more strict criteria of day 3 cortisol < 50 nmol/L, the remission rate was considerably lower at 61%. This criteria is in place in our institution so that we can safely identify patients who have early signs of remission to facilitate discharge on day 3 post-operatively; however reporting these rates in isolation lead to a misleadingly low remission rate compared to the more lenient criteria proposed by the Endocrine Society [16].

Evidence has suggested that higher day 3 cortisol concentration is associated with greater risk of recurrence of CD. A recent retrospective cohort analysis of 81 ETSS for CD by Mayberg et al. reported significantly higher recurrence rates in patients with post-operative cortisol nadir between 58 and 149 nmol/L (2.1–5.4 μg/dL) compared with those with cortisol < 55 nmol/L (2 μg/dL) (33% vs 6%, p = 0.01) [30]. Recurrence of CD was low in our series at 3%, and occurred in a patient with a corticotroph macroadenoma, which have been shown to be associated with higher rates of recurrence [31]. On post-operative assessment, serum cortisol fell between the two criteria for remission and if remission was strictly defined as a day 3 cortisol < 50 nmol/L, then this patient had in fact persistent hypercortisolaemia. This case highlights the difficulty when comparing studies reporting ETSS outcomes in CD – the distinction between persistent post-operative hypercortisolism and early recurrence of CD is not always clear-cut, and is dictated by the local protocol.

Whilst our recurrence data are encouraging in comparison to other reports on CD recurrence, which published rates of up to 22% [11], longer term follow-up is necessary before recurrence rates can be accurately defined. The criteria used to define long term recurrence of CD also varies widely in the literature; a large systematic review (n = 6400) by Petersenn et al. (2015) reported decreased recurrence rates when studies used UFC with ONDST vs. UFC only, and UFC with morning serum cortisol vs. UFC only [11]. This highlights the requirement for standardization of remission and recurrence criteria, for consistency in clinical practice and in the literature.

The post-operative surgical complication rate in our series was very low, with no cases of CSF leak, vascular injury or visual compromise. Other published case series have reported incidence rates for CSF leakage and meningitis of 0–7.2% and 0–7.9% [2123233] respectively. Postoperative meningitis is strongly associated with CSF leakage [34]. Some studies suggest that the endoscopic approach results in higher rates of carotid artery injury compared with the microscopic approach, which could be attributed to the nature of the extended lateral approach [35]. However, in this series of 43 ETSS, we report no cases of surgical related carotid artery injury, similar to other studies reporting 0% serious morbidity or mortality due to carotid artery injury [3336]. Finally, postoperative visual disturbance is a major concern, as it can be life changing for patients. Factors linked with visual complications include tumour size, patient age and any pre-existing visual conditions [37,38,39]. Visual deterioration after TSS for Cushing’s disease has been reported to occur in some large case series at rates of 1.9% [32] and 0.86% [12]. There were no cases of postoperative visual disturbance in our series.

While the surgical complication rate was low, our endocrine complication rate was higher than that reported in other studies, particularly the rate of DI. Transient DI occurred in 33% of cases, and permanent DI in 23%. These relatively high rates of transient DI may be due to the diagnostic criteria used in our protocol; we defined transient post-operative DI as one episode of hypotonic polyuria in the setting of normal or elevated plasma sodium concentration, requiring at least one dose of desmopressin. In contrast, some studies discount any polyuria which lasts less than 2 days [10], while others require the documentation of hypernatremia for the diagnosis of DI [40]. These more stringent criteria will not capture cases of mild transient DI; therefore it is not surprising that the rates of transient DI reported in a 2018 meta-analysis were lower than that in our study, 11.3% [29]. The rates of permanent DI in our study merits particular attention. TSS for CD has been shown to be associated with a higher risk of post-operative DI [4142]. It may be that a more aggressive surgical approach resulted in high remission rates, but at a cost of higher rates of DI. All patients are reviewed post-operatively in the National Pituitary Centre, where there is a low threshold for water deprivation testing and/or 3% saline testing. We did not routinely re-test patients for resolution of DI after their initial water deprivation test at 3 months, and it is possible that some cases subsequently resolved after 3 months [4143]. Regardless, the rate reported in this study is significant, and emphasises the importance of counselling the patient about the risk of DI long-term.

Strengths and limitations

The reporting of two remission rates based on widely accepted criteria is a strength of this study, and allows for direct comparison of our outcomes with other studies. All ETSS were performed by a single pituitary surgeon; while this removes bias from surgeon experience, the disadvantage of this is that the sample size is relatively low. Furthermore, because we included patients who were recently operated on to maximise numbers for analysis of surgical complications, the follow-up period is relatively short. A longer follow-up is required to comment accurately on recurrence of CD. We did not have full ascertainment of longitudinal post-operative data including dexamethasone suppression tests, and this has highlighted the need for protocolised follow-up to allow for consistency when reporting our results.

Conclusion

Endoscopic transsphenoidal surgery in patients with Cushing’s disease offers excellent remission rates and low morbidity. Remission rates are much higher when standard criteria [morning serum cortisol < 138 nmol/L (5μg/dl) within 7 days postoperatively] are used compared with day 3 cortisol < 50 nmol/l. Higher remission rates were found for patients with microadenomas. Patients should be counselled regarding risk of post-operative endocrine deficiencies, in particular permanent diabetes insipidus. Longer follow-up is required to accurately assess recurrence rates.

Availability of data and materials

The data that support the findings of this study are not publicly available due to restrictions by General Data Protection Regulation (GDPR), but are available from the corresponding author on reasonable request.

Abbreviations

TSS:
Transsphenoidal surgery
ACTH:
Adrenocorticotropic hormone
CD:
Cushing’s disease
ETSS:
Endoscopic transsphenoidal surgery
ONDST:
Overnight dexamethasone suppression test
LNSF:
Late night salivary cortisol
CRH:
Corticotropin releasing hormone
IPSS:
Inferior petrosal sinus sampling
DI:
Diabetes insipidus
TSH:
Thyroid stimulating hormone
GH:
Growth hormone
UFC:
Urinary free cortisol

References

  1. 1.

    Lindholm J, Juul S, Jorgensen JO, et al. Incidence and late prognosis of cushing’s syndrome: a population-based study. J Clin Endocrinol Metab. 2001;86(1):117–23.

    CAS PubMed PubMed Central Google Scholar

  2. 2.

    Broersen LHA, van Haalen FM, Biermasz NR, et al. Microscopic versus endoscopic transsphenoidal surgery in the Leiden cohort treated for Cushing’s disease: surgical outcome, mortality, and complications. Orphanet J Rare Dis. 2019;14(1):64.

    PubMed PubMed Central Article Google Scholar

  3. 3.

    Hammer GD, Tyrrell JB, Lamborn KR, et al. Transsphenoidal microsurgery for Cushing’s disease: initial outcome and long-term results. J Clin Endocrinol Metab. 2004;89:6348–57.

    CAS PubMed Article PubMed Central Google Scholar

  4. 4.

    Nieman LK. Cushing’s syndrome: update on signs, symptoms and biochemical screening. Eur J Endocrinol/Eur Fed Endoc Soc. 2015;173:M33–8.

    CAS Article Google Scholar

  5. 5.

    Swearingen B, Biller BM, Barker FG, et al. Long-term mortality after transsphenoidal surgery for Cushing disease. Ann Intern Med. 1999;130:821–4.

    CAS PubMed Article PubMed Central Google Scholar

  6. 6.

    Clayton RN, Jones PW, Reulen RC, et al. Mortality in patients with Cushing’s disease more than 10 years after remission: a multicentre, multinational, retrospective cohort study. Lancet Diabetes Endocrinol. 2016;4(7):569–76.

    PubMed Article PubMed Central Google Scholar

  7. 7.

    Berker M, Işikay I, Berker D, et al. Early promising results for the endoscopic surgical treatment of Cushing’s disease. Neurosurg Rev. 2014;37:105–14.

    Article Google Scholar

  8. 8.

    Cebula H, Baussart B, Villa C, et al. Efficacy of endoscopic endonasal transsphenoidal surgery for Cushing’s disease in 230 patients with positive and negative MRI. Acta Neurochir. 2017;159(7):1227–36.

    PubMed Article PubMed Central Google Scholar

  9. 9.

    Shimon I, Ram Z, Cohen ZR, et al. Transsphenoidal surgery for Cushing’s disease: endocrinological follow-up monitoring of 82 patients. Neurosurgery. 2002;51(1):57–62.

    PubMed Article PubMed Central Google Scholar

  10. 10.

    Wagenmakers MA, Boogaarts HD, Roerink SH, et al. Endoscopic transsphenoidal pituitary surgery: a good and safe primary treatment option for Cushing’s disease, even in case of macroadenomas or invasive adenomas. Eur J Endocrinol. 2013;169(3):329–37.

    CAS PubMed Article PubMed Central Google Scholar

  11. 11.

    Petersenn S, Beckers A, Ferone D, et al. Therapy of endocrine disease: outcomes in patients with Cushing’s disease undergoing transsphenoidal surgery: systematic review assessing criteria used to define remission and recurrence. Eur J Endocrinol. 2015;172(6):R227–39.

    CAS PubMed Article PubMed Central Google Scholar

  12. 12.

    Atkinson AB, Kennedy A, Wiggam MI, et al. Long-term remission rates after pituitary surgery for Cushing’s disease: the need for long-term surveillance. Clin Endocrinol. 2005;63:549–59.

    Article Google Scholar

  13. 13.

    Jho HD, Carrau RL. Endoscopic endonasal transsphenoidal surgery: experience with 50 patients. J Neurosurg. 1997;87(1):44–51.

    CAS PubMed Article PubMed Central Google Scholar

  14. 14.

    Biller BM, Grossman AB, Stewart PM, et al. Treatment of adrenocorticotropin-dependent Cushing’s syndrome: a consensus statement. J Clin Endocrinol Metab. 2008;93:2454–6.

    CAS PubMed PubMed Central Article Google Scholar

  15. 15.

    Ciric I, Ragin A, Baumgartner C, et al. Complications of transsphenoidal surgery: results of a national survey, review of the literature, and personal experience. Neurosurgery. 1997;40(2):225–36.

    CAS PubMed Article PubMed Central Google Scholar

  16. 16.

    Nieman LK, Biller BM, Findling JW, et al. Treatment of Cushing’s syndrome: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2015;100(8):2807–31.

    CAS PubMed PubMed Central Article Google Scholar

  17. 17.

    Storr H, Alexandraki K, Martin L, et al. Comparisons in the epidemiology, diagnostic features and cure rate by transsphenoidal surgery between paediatric and adult-onset Cushing’s disease. Eur J Endocrinol. 2011;164(5):667–74.

    CAS PubMed Article PubMed Central Google Scholar

  18. 18.

    Cappabianca P, Alfieri A, de Divitiis E. Endoscopic endonasal transsphenoidal approach to the Sella: towards functional endoscopic pituitary surgery (FEPS). Minim Invasive Neurosurg. 1998;41(2):66–73.

    CAS PubMed Article PubMed Central Google Scholar

  19. 19.

    Cappabianca P, Alfieri A, Thermes S, et al. Instruments for endoscopic endonasal transsphenoidal surgery. Neurosurgery. 1999;45(2):392–6.

    CAS PubMed Article PubMed Central Google Scholar

  20. 20.

    Jho H. Endoscopic transsphenoidal surgery. J Neuro-Oncol. 2001;54:187–95.

    CAS Article Google Scholar

  21. 21.

    Jho HD, Alfieri A. Endoscopic transsphenoidal pituitary surgery: various surgical techniques and recommended steps for procedural transition. Br J Neurosurg. 2000;14(5):432–40.

    CAS PubMed Article PubMed Central Google Scholar

  22. 22.

    Seckl J, Dunger D. Postoperative diabetes insipidus. Br Med J. 1989;298:2.

    CAS Article Google Scholar

  23. 23.

    Garrahy A, Moran C, Thompson CJ. Diagnosis and management of central diabetes insipidus in adults. Clin Endocrinol. 2019;90(1):23–30.

    Article Google Scholar

  24. 24.

    Glynn N, Agha A. Diagnosing growth hormone deficiency in adults. Int J Endocrinol. 2012;2012:972617.

    PubMed PubMed Central Article CAS Google Scholar

  25. 25.

    Starke RM, Reames DL, Chen CJ, et al. Pure endoscopic transsphenoidal surgery for Cushing’s disease: techniques, outcomes, and predictors of remission. Neurosurgery. 2013;72:240–7.

    PubMed Article PubMed Central Google Scholar

  26. 26.

    McCance DR, Besser M, Atkinson AB. Assessment of cure after transsphenoidal surgery for Cushing’s disease. Clin Endocrinol. 1996;44:1–06.

    CAS Article Google Scholar

  27. 27.

    Trainer PJ, Lawrie HS, Verhelst J, et al. Transsphenoidal resection in Cushing’s disease: undetectable serum cortisol as the definition of successfuI treatment. Clin Endocrinol. 1993;38:73–8.

    CAS Article Google Scholar

  28. 28.

    Yap LB, Turner HE, Adams CBT, et al. Undetectable postoperative cortisol does not always predict long-term remission in Cushing’s disease: a single Centre audit. Clin Endocrinol. 2002;56:25–31.

    CAS Article Google Scholar

  29. 29.

    Broersen LHA, Biermasz NR, van Furth WR, et al. Endoscopic vs. microscopic transsphenoidal surgery for Cushing’s disease: a systematic review and meta-analysis. Pituitary. 2018;21(5):524–34.

    PubMed PubMed Central Article Google Scholar

  30. 30.

    Mayberg M, Reintjes S, Patel A, et al. Dynamics of postoperative serum cortisol after transsphenoidal surgery for Cushing’s disease: implications for immediate reoperation and remission. J Neurosurg. 2018;129(5):1268–77.

    PubMed Article PubMed Central Google Scholar

  31. 31.

    Patil CG, Prevedello DM, Lad SP, et al. Late recurrences of Cushing’s disease after initial successful transsphenoidal surgery. J Clin Endocrinol Metab. 2008;93:358–62.

    CAS PubMed Article PubMed Central Google Scholar

  32. 32.

    Fahlbusch R, Buchfelder M, Müller OA. Transsphenoidal surgery for Cushing’s disease. J R Soc Med. 1986;79(5):262–9.

    CAS PubMed PubMed Central Article Google Scholar

  33. 33.

    Sarkar S, Rajaratnam S, Chacko G, et al. Pure endoscopic transsphenoidal surgery for functional pituitary adenomas: outcomes with Cushing’s disease. Acta Neurochir. 2016;158(1):77–86.

    PubMed Article PubMed Central Google Scholar

  34. 34.

    Magro E, Graillon T, Lassave J, et al. Complications related to the endoscopic Endonasal Transsphenoidal approach for nonfunctioning pituitary macroadenomas in 300 consecutive patients. World Neurosurg. 2016;89:442–53.

    PubMed Article PubMed Central Google Scholar

  35. 35.

    Ammirati M, Wei L, Ciric I. Short-term outcome of endoscopic versus microscopic pituitary adenoma surgery: a systematic review and meta-analysis. J Neurol Neurosurg Psychiatry. 2013;84(8):843–9.

    PubMed Article PubMed Central Google Scholar

  36. 36.

    Dehdashti AR, Gentili F. Current state of the art in the diagnosis and surgical treatment of Cushing disease: early experience with a purely endoscopic endonasal technique. Neurosurg Focus. 2007;23:E9.

    PubMed Article PubMed Central Google Scholar

  37. 37.

    Barzaghi LR, Medone M, Losa M, et al. Prognostic factors of visual field improvement after trans-sphenoidal approach for pituitary macroadenomas: review of the literature and analysis by quantitative method. Neurosurg Rev. 2012;35(3):369–78.

    PubMed Article PubMed Central Google Scholar

  38. 38.

    Mortini P, Losa M, Barzaghi R, et al. Results of transsphenoidal surgery in a large series of patients with pituitary adenoma. Neurosurgery. 2005;56(6):1222–33.

    PubMed Article PubMed Central Google Scholar

  39. 39.

    Nomikos P, Buchfelder M, Fahlbusch R. Current management of prolactinomas. J Neuro-Oncol. 2001;54(2):139–50.

    CAS Article Google Scholar

  40. 40.

    Mamelak AN, Carmichael J, Bonert VH, et al. Single-surgeon fully endoscopic endonasal transsphenoidal surgery: outcomes in three-hundred consecutive cases. Pituitary. 2013;16(3):393–401.

    PubMed Article PubMed Central Google Scholar

  41. 41.

    Hensen J, Henig A, Fahlbusch R, et al. Prevalence, predictors and patterns of postoperative polyuria and hyponatraemia in the immediate course after transsphenoidal surgery for pituitary adenomas. Clin Endocrinol. 1999;50:431–9.

    CAS Article Google Scholar

  42. 42.

    Nemergut EC, Zuo Z, Jane JA Jr, et al. Predictors of diabetes insipidus after transsphenoidal surgery: a review of 881 patients. J Neurosurg. 2005;103(3):448–54.

    PubMed Article PubMed Central Google Scholar

  43. 43.

    Adams JR, Blevins LS Jr, Allen GS, et al. Disorders of water metabolism following transsphenoidal pituitary surgery: a single institution’s experience. Pituitary. 2006;9(2):93–9.

    PubMed Article PubMed Central Google Scholar

Mortality rate in Cushing’s syndrome ‘unacceptably high’

A large study of mortality in Cushing’s syndrome calculated a threefold higher mortality rate for these patients, with cerebrovascular and atherosclerotic vascular diseases and infection accounting for 50% of deaths, researchers reported.

“[We have seen] improvement in outcome since 2000, but mortality is still unacceptably high,” Padiporn Limumpornpetch, MD, an endocrinologist at Prince of Songkla University in Thailand and PhD student at the University of Leeds, U.K., told Healio during the ENDO annual meeting. “The mortality outcome has shown an unacceptable standardized mortality rate of 3:1, with poorer outcomes in patients with adrenal Cushing’s [and] active and larger tumors in Cushing’s disease.”

Atherosclerotic vascular disease was the top cause of death in Cushing’s disease, with infection coming in as the second-highest cause of death. Data were derived from Limumpornpetch P. OR04-4. Presented at: ENDO annual meeting; March 20-23, 2021 (virtual meeting).

For a meta-analysis and meta-regression analysis of cause of death among patients with benign endogenous Cushing’s syndrome, Limumpornpetch and colleagues reviewed data published from 1952 to January 2021 from 92 study cohorts with 19,181 patients that reported mortality rates, including 66 studies that reported causes of death.

The researchers calculated the standardized mortality rate (SMR) for Cushing’s syndrome at 3 (95% CI, 2.3-3.9). For patients with adrenal Cushing’s syndrome, SMR was 3.3 (95% CI, 0.5-6.6) — higher than for those with Cushing’s disease, with an SMR of 2.8 (95% CI, 2.1-3.7). Rates were similar by sex and by type of adrenal tumor.

Deaths occurring within 30 days of surgery for Cushing’s syndrome fell to 3% after 2000 from 10% before that date (P < .005). During the entire study period, atherosclerotic vascular disease accounted for 27.4% of deaths in Cushing’s syndrome, and 12.7% were attributable to infection, 11.7% to cerebrovascular diseases, 10.6% to malignancy, 4.4% to thromboembolism, 2.9% to active disease, 3% to adrenal insufficiency and 2.2% to suicide.

“We look forward to the day when our interdisciplinary approach to managing these challenging patients can deliver outcomes similar to the background population,” Limumpornpetch said.

From https://www.healio.com/news/endocrinology/20210322/mortality-rate-in-cushings-syndrome-unacceptably-high

Largest-ever analysis of its kind finds Cushing’s syndrome triples risk of death

WASHINGTON–Endogenous Cushing’s syndrome, a rare hormonal disorder, is associated with a threefold increase in death, primarily due to cardiovascular disease and infection, according to a study whose results will be presented at ENDO 2021, the Endocrine Society’s annual meeting.

The research, according to the study authors, is the largest systematic review and meta-analysis to date of studies of endogenous (meaning “inside your body”) Cushing’s syndrome. Whereas Cushing’s syndrome most often results from external factors–taking cortisol-like medications such as prednisone–the endogenous type occurs when the body overproduces the hormone cortisol, affecting multiple bodily systems.

Accurate data on the mortality and specific causes of death in people with endogenous Cushing’s syndrome are lacking, said the study’s lead author, Padiporn Limumpornpetch, M.D., an endocrinologist from Prince of Songkla University, Thailand and Ph.D. student at the University of Leeds in Leeds, U.K. The study analyzed death data from more than 19,000 patients in 92 studies published through January 2021.

“Our results found that death rates have fallen since 2000 but are still unacceptably high,” Limumpornpetch said.

Cushing’s syndrome affects many parts of the body because cortisol responds to stress, maintains blood pressure and cardiovascular function, regulates blood sugar and keeps the immune system in check. The most common cause of endogenous Cushing’s syndrome is a tumor of the pituitary gland called Cushing’s disease, but another cause is a usually benign tumor of the adrenal glands called adrenal Cushing’s syndrome. All patients in this study had noncancerous tumors, according to Limumpornpetch.

Overall, the proportion of death from all study cohorts was 5 percent, the researchers reported. The standardized mortality ratio–the ratio of observed deaths in the study group to expected deaths in the general population matched by age and sex–was 3:1, indicating a threefold increase in deaths, she stated.

This mortality ratio was reportedly higher in patients with adrenal Cushing’s syndrome versus Cushing’s disease and in patients who had active disease versus those in remission. The standardized mortality ratio also was worse in patients with Cushing’s disease with larger tumors versus very small tumors (macroadenomas versus microadenomas).

On the positive side, mortality rates were lower after 2000 versus before then, which Limumpornpetch attributed to advances in diagnosis, operative techniques and medico-surgical care.

More than half of observed deaths were due to heart disease (24.7 percent), infections (14.4 percent), cerebrovascular diseases such as stroke or aneurysm (9.4 percent) or blood clots in a vein, known as thromboembolism (4.2 percent).

“The causes of death highlight the need for aggressive management of cardiovascular risk, prevention of thromboembolism and good infection control and emphasize the need to achieve disease remission, normalizing cortisol levels,” she said.

Surgery is the mainstay of initial treatment of Cushing’s syndrome. If an operation to remove the tumor fails to put the disease in remission, other treatments are available, such as medications.

Study co-author Victoria Nyaga, Ph.D., of the Belgian Cancer Centre in Brussels, Belgium, developed the Metapreg statistical analysis program used in this study.

###

Endocrinologists are at the core of solving the most pressing health problems of our time, from diabetes and obesity to infertility, bone health, and hormone-related cancers. The Endocrine Society is the world’s oldest and largest organization of scientists devoted to hormone research and physicians who care for people with hormone-related conditions.

The Society has more than 18,000 members, including scientists, physicians, educators, nurses and students in 122 countries. To learn more about the Society and the field of endocrinology, visit our site at http://www.endocrine.org. Follow us on Twitter at @TheEndoSociety and @EndoMedia.

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.

From https://www.eurekalert.org/pub_releases/2021-03/tes-lao031621.php

Cushing’s Disease Caused by a Pituitary Microadenoma Coexistent with a Meningioma

Yu Wang, Zhixiang Sun, Zhiquan Jiang

Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, People’s Republic of China

Correspondence: Zhiquan Jiang
Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Bengbu, Anhui 233004, People’s Republic of China
Tel +86-13966075971
Email bbjiangzhq@163.com

Abstract: Cushing’s disease (CD), also known as adrenocorticotropic hormone (ACTH)-dependent pituitary Cushing’s syndrome, is a rare and serious chronic endocrine disease that is usually caused by a pituitary adenoma (especially a pituitary microadenoma). Meningioma is the most common type of primary intracranial tumor and is usually benign. The patient in this case report presented with CD coexisting with pituitary microadenoma and meningioma, which is an extremely rare comorbidity. The pathogenesis of CD associated with meningioma remains unclear. Here, we describe the case of bilateral lower extremity edema, lower limb pain, abdominal purplish striae, and abdominal distension for 9 months in a 47-year-old woman. Two years ago, the patient underwent a hysterectomy at a local hospital for hysteromyoma. She had no previous radiotherapeutic treatment or other medical history. Magnetic resonance imaging of her head revealed a sellar lesion (7.8 mm × 6.4 mm) and a spherical mass (3.0 cm × 3.0 cm) in the right frontal convexity. Her level of serum adrenocorticotropic hormone (ACTH) was 169 pg/mL, and her cortisol levels were 933 nmol/mL and 778 nmol/mL at 8 am and 4 pm, respectively. Preoperatively, she was diagnosed with ACTH-secreting pituitary microadenoma and meningioma. Excision of the meningioma was performed through a craniotomy, while an endoscopic endonasal transsphenoidal approach was used to remove the pituitary adenoma. Meningioma and pituitary adenoma were confirmed by postoperative pathology. On the basis of this unusual case, the relevant literature was reviewed to illustrate the diagnosis and treatment of Cushing’s disease and to explore the pathogenesis of pituitary adenoma associated with meningioma.

Keywords: Cushing’s disease, pituitary adenoma, meningioma

Introduction

Cushing’s disease (CD) is a severe condition caused by an adrenocorticotropic hormone (ACTH)-secreting pituitary tumor that accounts for approximately 70% of all cases of endogenous Cushing’s syndrome. It has a total incidence of 1–2 cases per million per year and a prevalence rate of approximately 30 patients per million per year, making it an uncommon disease.1 Meningiomas account for 15–25% of all intracranial tumors, with an annual incidence of 6 cases per 100,000 persons.2 CD combined with meningioma is a rare condition, and even rarer in patients who have no previously known risk factors for either tumor. To the best of our knowledge, its pathogenesis have not been clearly described to date.

Case Presentation

Clinical History and Laboratory Findings

A 47-year-old woman was admitted to the endocrinology department of our hospital with chief complaints of bilateral lower extremity edema, left lower limb pain, abdominal purplish striae, and abdominal distension for 9 months. Two years ago, the patient had a hysterectomy at a local hospital for hysteromyoma. She had no previous radiotherapeutic treatment or other medical history. She weighed 90 kg and was 165 cm tall with a body mass index (BMI) of 33. Physical examination showed typical features of Cushing’s syndrome, including centripetal obesity, moon face, pedal edema, and buffalo hump. Her skin was thin and dry, with acne and hirsutism. On admission, her blood pressure was 146/115 mmHg and routine biochemical blood tests confirmed comorbidity with diabetes mellitus, hyperlipidemia, and hypokalemia.

Endocrine measurements showed that her serum ACTH was 169 pg/mL (reference value: 5–50 pg/mL), cortisol (8 am) was 933 nmol/L (reference value: 138–690 nmol/L), and cortisol (4 pm) was 778 nmol/L (reference value: 69–345 nmol/L), indicating that her ACTH and cortisol levels were dramatically increased. Cortisol secretion was increased and had lost its circadian rhythm. The low-dose dexamethasone suppression test showed that cortisol suppression was < 50%, while a >50% suppression of cortisol was found in the high-dose dexamethasone suppression test. Serum prolactin, follicle-stimulating hormone, luteinizing hormone, testosterone, free thyroid hormone (FT3 and FT4), and thyrotropin values were normal. Endocrinological evaluation suspected that pituitary lesions caused Cushing syndrome.

Imaging Analysis

The patient underwent a magnetic resonance imaging (MRI) scan to image her head. T1-weighted MRI with contrast enhancement showed a spherical enhancing mass (3.0 cm × 3.0 cm) in the right frontal convexity and a dural tail sign (Figure 1A). In the sellar area, the enhancement degree of the lesion (7.8 mm × 6.4 mm) was significantly lower than that of the surrounding pituitary tissue, and the pituitary stalk was displaced to the right (Figure 1A and B). No abnormalities were found on plain or enhanced adrenal computed tomography scans.

Figure 1 Enhanced magnetic resonance imaging (MRI) of the patient’s head: (A) Coronal view of the gadolinium-enhanced T1-weighted image showing a spherical enhancing mass in the right frontal convexity and a dural tail sign. A round low-intensity lesion can be seen on the right side of the pituitary gland, and the pituitary stalk is displaced to the right. (B) Sagittal T1-weighted sequence with contrast showing the degree of enhancement is lower than that of the pituitary in the sellar region.

 

Treatment and Pathological Examination

Physical examination, endocrine examination, and head MRI successfully proved that pituitary microadenoma caused Cushing’s syndrome (specifically CD) comorbid with asymptomatic meningioma.

In order to receive surgical treatment, the patient was referred from the endocrinology department to neurosurgery. She underwent neuroendoscopic transsphenoidal surgery and the pituitary microadenoma was removed. The sellar floor was reconstructed with artificial dura mater, and after this reconstruction, no cerebrospinal fluid leakage was observed. The pathological specimen was examined and was determined to be consistent with a pituitary microadenoma (Figure 2A). One month later, excision of the meningioma was performed through a right frontal trephine craniotomy. Histological examination revealed a WHO grade I meningioma (Figure 2B).

Figure 2 (A) Histopathologic examination revealed a pituitary adenoma (Hematoxylin and eosin staining, 100×). (B) Histopathologic examination revealed a meningioma (Hematoxylin and eosin staining, 100×).

 

Outcome and Follow Up

On the second day after the operation, her cortisol level dropped below the normal range in the morning. Hydrocortisone replacement therapy was started on the same day. In addition, she had developed transient diabetes insipidus, which was treated with desmopressin. Three months postoperatively, after hydrocortisone replacement therapy, the symptoms of Cushing’s disease were alleviated, and the cortisol level returned to normal, which was 249nmol/L (reference value: 138~690nmol/L).

At the 1-year follow-up, no lesions were observed on the MRI scan and the symptoms of Cushing’s syndrome were in remission. The use of hydrocortisone supplements were discontinued and hormone levels remained normal, indicating recovery of the hypothalamic–pituitary–adrenal (HPA) axis. The patient had lost 30 kg and her BMI had dropped to 22, while her blood glucose, triglyceride level, and blood pressure had all returned to normal. Physical changes in the patient pre- and post-treatment are shown in Figure 3A and B.

Figure 3 Abdominal appearance with striae (A) preoperation and (B) 4 months postoperation.

 

Discussion

Cushing’s Disease

CD is a serious clinical condition caused by a pituitary adenoma secreting a high level of ACTH, leading to hypercortisolism. The proportion of ACTH-secreting pituitary adenomas (corresponding to CD) among hormone-secreting pituitary adenomas is 4.8%–10%, which affects women three times more frequently than men, mainly occurs in those 40–60 years old.3,4 Exposure to excessive cortisol can lead to various manifestations of Cushing’s syndrome and increases in morbidity and mortality.5 Therefore, early diagnosis and treatment of CD are very important.

The diagnosis and differential diagnosis of CD is very complicated, and these have always been challenging problems in clinical endocrinology. Once Cushing’s syndrome is diagnosed, its etiology should be determined. A diagnosis of Cushing’s disease is made based on a biochemical examination confirming the pituitary origin of the condition and exclude other sources (namely, ectopic ACTH secretion and adrenocortical tumors).3 High-dose dexamethasone suppression and corticotropin-releasing-hormone stimulation tests may be used to distinguish high-secretion sources of pituitary and ectopic ACTH. More than 90% of the pituitary adenomas that cause CD are microadenomas (≤10 mm in diameter), and 40% of the cases cannot be located by radiological examination.5 Examination with bilateral inferior petrosal sinus sampling (BIPSS) is necessary for CD patients in whom noninvasive biochemical and imaging examinations do not lead to a definitive diagnosis.6

The first-line treatment for CD is transsphenoidal selective tumor resection (TSS) with approximately 78% of the patients in remission after the operation, and 13% of patients relapse within 10 years after surgery. Therefore, there are a considerable number of patients who have experienced long-term surgical failure and require additional second-line treatment, such as radiotherapy, bilateral adrenalectomy, or medication.4

The pathogenesis of CD is unclear, but recent studies have confirmed that there are somatic activation mutations of multiple genes in adrenocorticotropin adenomas, while ubiquitin specific peptidase 8 (USP8) is the most common, accounting for about 50% of the mutations in these adenomas.7

Pituitary Adenoma Associated with Meningioma

Radiotherapy used to treat pituitary tumors is a well-known reason for the development of meningiomas. Gene mutations are a common molecular characteristic of meningiomas, with inactivation of the neurofibromatosis type 2 (NF2) tumor suppressor gene found in 55% of meningiomas, and a further 25% of meningiomas accounted for by recently described mutations in other genes.8

Simultaneous occurrence of pituitary adenoma and meningioma without a history of radiotherapy is a rare condition clinically, having only been described in 49 cases before 2019,9 while ACTH-secreting pituitary adenomas (CD) comorbid with meningioma have been reported even less frequently. In the reported cases, the most common site of meningioma is parasellar, accounting for 44.9%, while meningioma located in the distant part of the adenoma is rare.9,10

A number of clinicians have suggested that the coexistence of meningiomas and pituitary adenomas is incidental, with no relationship between the two diseases.2,11

Genetic imbalances have been found in pituitary adenomas, including in particular the chromosomal deletions of 1p, 2q, 4, 5, 6, 11q, 12q, 13q, and 18q, and the overexpression of 9q, 16p, 17p, 19, and 20q. Functional adenomas have more such imbalances than nonfunctional adenomas, corresponding in particular to deletions of chromosomes 4 and 18q, and the overexpression of chromosomes 17 and 19.12 Meanwhile, estrogen receptor positive de novo meningiomas significantly involve chromosomes 14 and 22.13

The study by Hwang et al14 reported that the expression levels of heterogeneous nuclear ribonucleoprotein (hnRNP) family proteins were significantly higher in pituitary adenomas and meningiomas than that in normal brain tissues. Leucine-rich repeat-containing G-protein coupled receptor 5 (LGR5) and its downstream signaling pathways play an pivotal role in pituitary tumor, meningioma, and other brain tumors. Zhu et al15 reported that multiple endocrine neoplasia type 1 (MEN1) plays an important role in pituitary adenoma associated with meningioma by upregulating the mammalian target of rapamycin signaling pathway. They found that rapamycin treatment promotes apoptosis in primary cells of the pituitary adenoma and meningioma in cases of pituitary adenoma associated with meningioma. Recurrence of pituitary adenoma, younger age, and larger size of meningioma have been shown to be significantly associated with MEN1 mutation.16

Mathuriya et al17 suggested that hormones may contribute to the occurrence of meningiomas.

de Vries et al9 reported that compared with other types of adenomas, the proportion of growth hormone adenomas is higher, accounting for about one third of cases. Meanwhile, Friend et al18 demonstrated that activation of GH/insulin-like growth factor-1 (IGF-1) axis clearly increased the growth rate of meningiomas. However, in the present case, we observed the coexistence of ACTH-secreting adenoma and meningioma. Further studies are required to understand whether ACTH or cortisol are related to the occurrence and development of meningioma.

In our case, pituitary microadenoma was the cause of Cushing’s syndrome, while the meningioma was an incidental imaging observation. With the popularity and technological progress of high-resolution imaging technology, the reported prevalence of intracranial lesions related to dominant pathology has increased.2 However, when imaging examinations are limited to specific regions, the diagnosis of lesions in other locations is likely to be omitted. For example, in our case, performing MRI of the sellar region alone may have meant that the meningioma was missed.

Conclusion

Cushing’s disease is the most common cause of endogenous Cushing’s syndrome and is caused by ACTH-secreting pituitary adenoma.It is associated with severe complications and reduced quality of life, so early diagnosis and treatment are critical. The coexistence of CD, pituitary adenoma, and meningioma is very rare, and the exact mechanisms underlying such comorbidity are currently unclear and need further study.

Data Sharing Statement

The data that support the findings of this study are available on request from the corresponding author, Zhiquan Jiang.

Ethics and Consent Statement

Based on the regulations of the department of research of the Bengbu Medical College, institutional review board approval is not required for case reports.

Consent for Publication

Written informed consent has been provided by the patient to have the case details and any accompanying images published.

Author Contributions

All authors made substantial contributions to conception and design, acquisition of data, or analysis and interpretation of data; took part in drafting the article or revising it critically for important intellectual content; agreed to submit to the current journal; gave final approval of the version to be published; and agree to be accountable for all aspects of the work.

Funding

The authors declared that this case has received no financial support.

Disclosure

The authors report no conflicts of interest in this work.

References

1. Lacroix A, Feelders RA, Stratakis CA, Nieman LK. Cushing’s syndrome. Lancet. 2015;386(9996):913–927. doi:10.1016/S0140-6736(14)61375-1

2. Curto L, Squadrito S, Almoto B, et al. MRI finding of simultaneous coexistence of growth hormone-secreting pituitary adenoma with intracranial meningioma and carotid artery aneurysms: report of a case. Pituitary. 2007;10(3):299–305. doi:10.1007/s11102-007-0011-4

3. Mehta GU, Lonser RR. Management of hormone-secreting pituitary adenomas. Neuro Oncol. 2017;19(6):762–773. doi:10.1093/neuonc/now130

4. Pivonello R, De Leo M, Cozzolino A, Colao A. The treatment of Cushing’s disease. Endocr Rev. 2015;36(4):385–486. doi:10.1210/er.2013-1048

5. Tritos NA, Biller BMK. Current management of Cushing’s disease. J Intern Med. 2019;286(5):526–541. doi:10.1111/joim.12975

6. Fan C, Zhang C, Shi X, et al. Assessing the value of bilateral inferior petrosal sinus sampling in the diagnosis and treatment of a complex case of Cushing’s disease. Intractable Rare Dis Res. 2013;2(1):24–29. doi:10.5582/irdr.2013.v2.1.24

7. Sbiera S, Kunz M, Weigand I, Deutschbein T, Dandekar T, Fassnacht M. The new genetic landscape of Cushing’s disease: deubiquitinases in the spotlight. Cancers. 2019;11(11):1761. doi:10.3390/cancers11111761

8. Apra C, Peyre M, Kalamarides M. Current treatment options for meningioma. Expert Rev Neurother. 2018;18(3):241–249. doi:10.1080/14737175.2018.1429920

9. de Vries F, Lobatto DJ, Zamanipoor Najafabadi AH, et al. Unexpected concomitant pituitary adenoma and suprasellar meningioma: a case report and review of the literature. Br J Neurosurg. 2019:1–5. doi:10.1080/02688697.2018.1556782.

10. Gosal JS, Shukla K, Praneeth K, et al. Coexistent pituitary adenoma and frontal convexity meningioma with frontal sinus invasion: a rare association. Surg Neurol Int. 2020;11:270. doi:10.25259/SNI_164_2020

11. Cannavo S, Curto L, Fazio R, et al. Coexistence of growth hormone-secreting pituitary adenoma and intracranial meningioma: a case report and review of the literature. J Endocrinol Invest. 1993;16(9):703–708. doi:10.1007/BF03348915

12. Szymas J, Schluens K, Liebert W, Petersen I. Genomic instability in pituitary adenomas. Pituitary. 2002;5(4):211–219. doi:10.1023/a:1025313214951

13. Pravdenkova S, Al-Mefty O, Sawyer J, Husain M. Progesterone and estrogen receptors: opposing prognostic indicators in meningiomas. J Neurosurg. 2006;105(2):163–173. doi:10.3171/jns.2006.105.2.163

14. Hwang M, Han MH, Park HH, et al. LGR5 and downstream intracellular signaling proteins play critical roles in the cell proliferation of neuroblastoma, meningioma and pituitary adenoma. Exp Neurobiol. 2019;28(5):628–641. doi:10.5607/en.2019.28.5.628

15. Zhu H, Miao Y, Shen Y, et al. The clinical characteristics and molecular mechanism of pituitary adenoma associated with meningioma. J Transl Med. 2019;17(1):354. doi:10.1186/s12967-019-2103-0

16. Zhu H, Miao Y, Shen Y, et al. Germline mutations in MEN1 are associated with the tumorigenesis of pituitary adenoma associated with meningioma. Oncol Lett. 2020;20(1):561–568. doi:10.3892/ol.2020.11601

17. Mathuriya SN, Vasishta RK, Dash RJ, Kak VK. Pituitary adenoma and parasagittal meningioma: an unusual association. Neurol India. 2000;48(1):72.

18. Friend KE, Radinsky R, McCutcheon IE. Growth hormone receptor expression and function in meningiomas: effect of a specific receptor antagonist. J Neurosurg. 1999;91(1):93–99. doi:10.3171/jns.1999.91.1.0093

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

From https://www.dovepress.com/cushingrsquos-disease-caused-by-a-pituitary-microadenoma-coexistent-wi-peer-reviewed-fulltext-article-IJGM

Cushing’s Found to Cause ‘Persistent Mental Health Problems’ in Patients

For years before and after their diagnosis, people with Cushing’s disease use more psychotropic medications — those that affect mood, thoughts, or perception — for mental health problems than their healthy peers, a study in Sweden found.

Notably, patients experiencing long-term disease remission still showed higher use of antidepressants and sleeping pills than healthy individuals.

These findings highlight Cushing’s persistent negative effects on mental health, according to researchers.

Additionally, the results of this study, based on prescribed medication dispenses in Sweden, support the importance of earlier diagnoses of Cushing’s disease — and the need for close and long-term monitoring of neuropsychiatric symptoms in this patient population, the researchers said.

The study, “Psychotropic drugs in patients with Cushing’s disease before diagnosis and at long-term follow-up — a nationwide study,” was published in the Journal of Clinical Endocrinology & Metabolism.

Mental health issues such as anxiety, depression, sleep disturbances, and cognitive impairments are part of the wide range of symptoms caused by the abnormally high levels of the cortisol hormone that characterize Cushing’s syndrome. Of note, Cushing’s disease is a form of Cushing’s syndrome caused by a tumor in the pituitary gland.

A “few” studies have reported the elimination or partial lessening of neuropsychiatric symptoms after successful Cushing’s treatment, according to the researchers.

But others noted that “impaired cognitive function and quality of life seemed to persist for a long time after biochemical [cortisol level-based] remission had been achieved,” the team wrote.

Now, these researchers, from several universities in Sweden, have assessed the use of psychotropic medications — reflecting mental health burden — in 372 people with Cushing’s disease. The use of such medications was assessed five years before diagnosis, at the time of diagnosis, and at five and 10 years post-diagnosis.

The patients, diagnosed between 1990 and 2018, were identified through the Swedish Pituitary Register, which covers 95% of all people with Cushing’s disease in the country. Most of the patients (76%) were women. Altogether, the patients’ mean age at diagnosis was 44 years.

For each individual with Cushing’s, four sex-, age-, and residential area-matched healthy individuals were used as controls for comparative analyses.

Data on each individual’s dispenses of medications commonly used for neuropsychiatric issues were obtained from the Swedish Prescribed Drug Register. This register, which fully covers all prescribed medications given throughout the country, also was used to determine each patient’s dispenses of other medications for Cushing’s disease symptoms, such as high blood pressure, also called hypertension, and diabetes.

The results showed that the use of antidepressants, anxiolytics — medications to lessen anxiety — and sleeping pills was at least twofold higher in Cushing’s patients than in healthy individuals during the five-year period before diagnosis, and at the time of diagnosis.

Five years after diagnosis, the proportion of patients using antidepressants (26%) and sleeping pills (22%) remained unchanged, and even individuals in remission showed significantly higher use of such medications than did controls (20–26% vs. 8.6–12%).

According to the results, one-third of the patients on antidepressants since their diagnosis were able to discontinue treatment before the five-year assessment — most having achieved disease remission. However, 47% of those receiving antidepressants at five years had initiated such treatment at a median of 2.4 years after diagnosis.

During the five-year follow-up, older age and being a woman appeared to increase the risk of antidepressant use among Cushing’s disease patients.

At 10 years of follow-up, the use of antidepressants and sleeping pills was not significantly different between groups, despite the fact that antidepressants use remained about the same among patients.

Notably, researchers conducted an analysis of 76 patients with sustained remission for a median of 9.3 years, and 292 matching controls. That analysis showed that the use of antidepressants and sleeping pills was significantly higher among patients.

The use of other medications, such as those for hypertension and diabetes, also was significantly more common among Cushing’s disease patients before, at diagnosis, and at five years post-diagnosis — although the post-diagnosis numbers dropped by half during that period.

After 10 years, only the use of anti-diabetic medications remained significantly higher in patients as compared with controls.

These findings suggest that other conditions associated with Cushing’s disease, such as hypertension and diabetes, are effectively lessened with treatment. However, they also highlight that “many patients with CD [Cushing’s disease] will have persistent mental health problems,” the researchers wrote.

In addition, visits to a psychiatrist and hospital admissions for treatment of psychiatric disorders tended to be more common among Cushing’s disease patients, even before diagnosis, the team noted.

“This nationwide register-based study shows that use of psychotropic drugs in CD patients is increased from several years before diagnosis,” the researchers wrote, adding that this use “remained elevated regardless of remission status, suggesting persisting negative effects on mental health,” the researchers wrote.

These findings highlight the importance of early diagnosis of Cushing’s disease and of considering neuropsychiatric symptoms “as an important part of the disease,” they concluded.

There is a “need for long-term monitoring of mental health” in Cushing’s, they wrote.

From https://cushingsdiseasenews.com/2021/02/24/cushings-found-to-cause-persistent-negative-mental-health-effects-swedish-study/

%d bloggers like this: