Rare Challenges in Diagnosing Cushing’s Syndrome and Primary Aldosteronism: A Case Report of a Female With a Negative Workup

Posted on September 18, 2023 by MaryO

Abstract

Cushing’s syndrome with concurrent primary aldosteronism (PA) is a rare presentation, and establishing an early diagnosis is imperative to preventing morbidity and long-term sequelae. The diagnosis is established by sequential lab work, showing an elevated cortisol and aldosterone level.

Taking the above into consideration, it is evident that repeatedly negative results on all three tests can present an extremely challenging case. In this report, we discuss a female who presented with an adrenal incidentaloma and features suggestive of primary hyperaldosteronism as well as Cushing’s syndrome but no elevations in serum, urine, or salivary cortisol.

In this study, we present a 37-year-old female with resistant hypertension and tachycardia. She had several features suggestive of Cushing’s syndrome including resistant hypertension, proximal muscle weakness, weight gain, easy bruising, hair loss, and a history of tachycardia and chest pain. Examination revealed an obese female with thin silvery abdominal striae. The patient’s labs revealed normal serum cortisol, urine-free cortisol (UFC), late-night salivary cortisol, and a normal dexamethasone suppression test. An abdominal computed tomography (CT) scan revealed a right adrenal mass measuring 2.1 x 1.5 x 2.5 cm. Due to a high index of suspicion, adrenal venous sampling was performed, which revealed high levels of cortisol and aldosterone in the right vein, confirming the diagnosis. The patient subsequently underwent a right adrenalectomy. She developed hypotension post-op, leading to the diagnosis of glucocorticoid-remediable aldosteronism.

Introduction

Primary aldosteronism (PA) is the excess production of aldosterone by the adrenal glands, despite a low serum renin level. The presentation of hyperaldosteronism can be vague and include symptoms such as muscle weakness, fatigue, headaches, numbness, and cramps. More specific findings include resistant hypertension, low serum potassium, and metabolic alkalosis. The etiologies are variable and can include an adrenal adenoma (Conn syndrome) or bilateral adrenal hyperplasia [1].

Cushing’s syndrome is also caused by excess hormone secretion by the adrenal glands. The etiologies include a primary adrenal adenoma, hyperplasia, carcinoma, or exogenous corticosteroid use. It can also be caused by an adrenocorticotropic hormone (ACTH)-secreting pituitary adenoma or as a result of paraneoplastic ACTH secretion. The clinical presentation is highly variable and leads to difficulties in establishing a diagnosis.

The concurrent existence of primary hyperaldosteronism and Cushing’s syndrome creates additional hindrances in diagnosis, yet further obscured in a patient with a repeatedly negative workup for both conditions.

Case Presentation

A 37-year-old female presented to her primary care physician with complaints of proximal muscle weakness, tachycardia, and chest pain. Repeated blood pressure readings revealed that she was hypertensive, and she was started on amlodipine and benazepril, which elevated her blood pressure further. A computed tomography (CT) scan (Figure 1) of the abdomen was performed due to resistant hypertension, which revealed an adrenal incidentaloma (right adrenal gland measuring 2.1 x 1.5 x 2.5 cm). Precontract density was 5 Hounsfield units, and a 15-minute delayed washout showed 11 Hounsfield units for a 72% washout. She was thus referred to endocrinology.

Abdominal-CT-scan-showing-a-nodule-in-the-right-adrenal-gland-measuring-2.1-x-1.5-x-2.5-cm
Figure 1: Abdominal CT scan showing a nodule in the right adrenal gland measuring 2.1 x 1.5 x 2.5 cm

She presented to the endocrinology clinic on March 12, 2021. A thorough physical examination was performed, which revealed a well-appearing obese female (BMI of 38.86 kg/m2) with no acute distress. Her blood pressure was 144/108 mmHg, her pulse was 95, and she was afebrile. Thin silvery striations were present on the abdomen, and alopecia was present on the crown. A review of all other systems was unremarkable. A detailed family history revealed early-onset hypertension in her brother (age: 35 years) and her mother (age: 30 years). Personal history included elevated anxiety, weight gain, headaches (frontal band distribution), increased thirst, easy bruising as well as delayed clearance of bruises, and proximal muscle weakness presenting as difficulty in climbing stairs and inability to lift heavy objects. She reported no change in menstrual cycles. There was no history of exogenous corticosteroid use.

Serum biochemistries were sent (Table 1), which showed normal levels of thyroid stimulating hormone (TSH), creatinine, liver function tests, and serum electrolytes. However, mildly elevated aldosterone (23 ng/dl), mild hypokalemia (3.3 mEq/L), and suppressed ACTH and dehydroepiandrosterone (DHEA) sulfate were discovered. The aldosterone to renin ratio was also elevated at 59.9 on spironolactone and was 71.4 three months later when spironolactone was discontinued. These findings lead to a preliminary diagnosis of primary hyperaldosteronism.

Test Result
Calcium 9.1 mmol/L
Sodium 137 mmol/L
Potassium 4.1 mmol/L
Chloride 106 mmol/L
CO2 27
BUN 15 mmol/L
Glucose 95 mmol/L
Creatinine 1.1 μmol/L
AST 24 U/L
ALT 20 U/L
Albumin 4.4 g/L
Total protein 7.0 g/L
Total bilirubin 0.4 μmol/L
Alkaline phosphatase 40 U/L
Renin 0.44
Table 1: Patient serum biochemistries

BUN: Blood urea nitrogen; AST: Aspartate transaminase; ALT: Alanine transaminase.

A workup for elevated cortisol was also performed as the patient was phenotypically Cushingoid, and the following biochemistries were sent sequentially: serum cortisol, 24-hour urine-free cortisol (UFC), salivary cortisol, and a low-dose dexamethasone suppression test (Table 2). The bloodwork was hence nonconfirmatory.

Endocrine workup
Serum cortisol 4.5 mcg/dL
Urine-free cortisol 1.57 g/24 h
Salivary cortisol <0.03 μg/dL
Dexamethasone suppression test 1.5 mcg/dL
Aldosterone <4.0
Table 2: Patient follow-up bloodwork

Despite a repeatedly negative workup for Cushing’s syndrome, adrenal venous sampling was performed due to a high index of suspicion. The results revealed an inferior vena cava (IVC) cortisol of 20, left adrenal venous (LAV) cortisol of 81, and right adrenal vein (RAV) cortisol of 1280. The results of the IVC aldosterone were 24, LAV aldosterone was 660 and RAV aldosterone was 1500. The elevated levels of cortisol in the RAV were in complete contradiction to the aforementioned workup. A diagnosis of Cushing’s syndrome and concurrent PA was determined.

Adrenal veinous sampling was instrumental in establishing the diagnosis but was equivocal and did not lateralize aldosterone and cortisol excess. However, the amount of aldosterone and cortisol were both significantly higher on the right side. After a panel discussion with doctors from several disciplines, a laparoscopic adrenalectomy was planned. The procedure was successful, and the patient was initially showing clinical improvement. The specimen was sent for pathological evaluation and revealed an adrenal cortical adenoma.

After initial improvement, the patient developed hypotension, which was likely due to adrenal insufficiency. The patient was supplemented with 1-mg dexamethasone tablets, which stabilized her condition, and a diagnosis of glucocorticoid-remediable-aldosteronism was made.

Based on a strong family history of early onset-resistant hypertension, a genetic component was suspected. Several genes associated with PA with autosomal dominant inheritance have been identified [2], such as CYP11B2, CLCN2, KCNJ5, CACNA1D, and CACNA1H. The patient was offered genetic testing but was unable to follow through due to financial reasons.

Discussion

This patient presented as an extremely rare example of PA and Cushing’s syndrome, with negative serum cortisol, 24-hour UFC, late-night salivary cortisol, and a dexamethasone suppression test. Despite repeatedly negative lab results, the patient presented with a markedly elevated cortisol on adrenal venous sampling. In our literature search, we found an instance of a patient with several negative UFCs [3]; however, to the best of our knowledge, there have been no reported instances of a completely negative workup in a patient who is positive for Cushing’s syndrome. In fact, in the practice guidelines published by the Journal of Clinical Endocrinology & Metabolism [4], it is recommended that patients with a suspected diagnosis of Cushing’s syndrome or an adrenal incidentaloma and two concordant negative test results need not undergo further investigations.

One proposed mechanism for the misleading workup could be assay interference. Interference occurs when a substance or process falsely alters an assay result [5]. This can lead to incorrect diagnosis and subsequent treatment and poses a threat to the patient. Another suggested mechanism causing false negative test results could be the hook effect [6]. The hook effect is described as a phenomenon that leads to falsely low results due to the presence of excessive analyte.

In a study by Friedman et al. [7], it was noted that patients with “episodic Cushing’s syndrome” or those with mild symptoms had a negative workup. The study recommended serial monitoring for the disease. The interesting fact is that our patient had several features suggestive of active Cushing’s syndrome, and the hypotension seen postoperatively was a testament to the fact that there was in fact a cortisol excess, which led to adrenal insufficiency. In light of the above, a consistently negative workup is perplexing.

Zhang et al. suggested performing a low-dose dexamethasone suppression test in individuals presenting with PA, prior to adrenal vein sampling (AVS) and surgery due to the high prevalence of Cushing’s syndrome in patients with PA [8]. A positive test result can lead to a straightforward diagnosis; however, in this rare case where the patient had severe negative tests, it can present as a challenge in diagnosis and treatment.

Conclusions

The presence of PA and concurrent Cushing’s syndrome can present as a diagnostic challenge. It is recommended to follow up on the signs of Cushing’s syndrome with preliminary tests and to presume its absence if two concordant tests are negative. Our patient, however, was an exceptional case.

This case highlighted the importance of maintaining a high index of suspicion for patients presenting with several signs and symptoms of the disease and a negative workup. More attention should be paid to the patient’s history, and a thorough physical examination should be conducted. In those with an uncertain diagnosis, adrenal venous sampling can provide a clearer picture and lead to a more accurate understanding of the case.

References

  1. Reincke M, Bancos I, Mulatero P, Scholl UI, Stowasser M, Williams TA: Diagnosis and treatment of primary aldosteronism. Lancet Diabetes Endocrinol. 2021, 9:876-92. 10.1016/S2213-8587(21)00210-2
  2. Dutta RK, Söderkvist P, Gimm O: Genetics of primary hyperaldosteronism. Endocr Relat Cancer. 2016, 23:R437-54. 10.1530/ERC-16-0055
  3. Moloney KJ, Mercado JU, Ludlam WH, Broyles FE: Diagnosis of Cushing’s disease in a patient with consistently normal urinary free cortisol levels: a case report. Clin Case Rep. 2016, 4:1181-3. 10.1002/ccr3.647
  4. Nieman LK, Biller BM, Findling JW, Newell-Price J, Savage MO, Stewart PM, Montori VM: The diagnosis of Cushing’s syndrome: an Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2008, 93:1526-40. 10.1210/jc.2008-0125
  5. Dimeski G: Interference testing. Clin Biochem Rev. 2008, 29:S43-8.
  6. The hook effect. (2014). Accessed: June 19, 2023: https://www.aacc.org/science-and-research/clinical-chemistry-trainee-council/trainee-council-in-english/pearls-of-lab….
  7. Friedman TC, Ghods DE, Shahinian HK, et al.: High prevalence of normal tests assessing hypercortisolism in subjects with mild and episodic Cushing’s syndrome suggests that the paradigm for diagnosis and exclusion of Cushing’s syndrome requires multiple testing. Horm Metab Res. 2010, 42:874-81. 10.1055/s-0030-1263128
  8. Zhang Y, Tan J, Yang Q, et al.: Primary aldosteronism concurrent with subclinical Cushing’s syndrome: a case report and review of the literature. J Med Case Rep. 2020, 14:32. 10.1186/s13256-020-2353-8

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Unique Gene Expression Signature in Periadrenal Adipose Tissue Identifies a High Blood Pressure Group in Patients With Cushing Syndrome

Posted on September 13, 2023 by MaryO

Abstract

Background:

Cushing syndrome (CS) is a rare disease caused by excess cortisol levels with high cardiovascular morbidity and mortality. Hypertension in CS promotes hypercortisolism-associated cardiovascular events. Adipose tissue is a highly plastic tissue with most cell types strongly affected by the excess cortisol exposure. We hypothesized that the molecular and cellular changes of periadrenal adipose tissue in response to cortisol excess impact systemic blood pressure levels in patients with CS.

Methods:

We investigated gene expression signatures in periadrenal adipose tissue from patients with adrenal CS collected during adrenal surgery.

Results:

During active CS we observed a downregulation of gene programs associated with inflammation in periadrenal adipose tissue. In addition, we observed a clustering of the patients based on tissue gene expression profiles into 2 groups according to blood pressure levels (CS low blood pressure and CS high blood pressure). The 2 clusters showed significant differences in gene expression pattens of the renin-angiotensin-aldosterone-system. Renin was the strongest regulated gene compared with control patients and its expression correlated with increased blood pressure observed in our patients with CS. In the CS high blood pressure group, systemic renin plasma levels were suppressed indicative of an abnormal blood pressure associated with periadrenal adipose tissue renin-angiotensin-aldosterone-system activation.

Conclusions:

Here, we show for the first time a relevant association of the local renin-angiotensin-aldosterone-system and systemic blood pressure levels in patients with CS. Patients from the CS high blood pressure group still had increased blood pressure levels after 6 months in remission, highlighting the importance of local tissue effects on long-term systemic effects observed in CS.

Footnotes

*U. Stifel and F. Vogel contributed equally.

For Sources of Funding and Disclosures, see page xxx.

Supplemental Material is available at https://www.ahajournals.org/doi/suppl/10.1161/HYPERTENSIONAHA.123.21185.

Correspondence to: Martin Reincke, Department of Medicine IV, University Hospital, LMU Munich, GermanyEmail martin.reincke@med.uni-muenchen.de
Jan Tuckermann, Institute of Comparative Molecular Endocrinology (CME), Ulm University, GermanyEmail jan.tuckermann@uni-ulm.de

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From https://www.ahajournals.org/doi/10.1161/HYPERTENSIONAHA.123.21185

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Adults with Cushing’s Syndrome Report High Burden Of Illness, Despite Ongoing Treatment

Posted on September 4, 2023 by MaryO

Key takeaways:

  • Cushing’s syndrome symptoms moderately impact quality of life for adults with the condition.
  • Weight gain, muscle fatigue and menstrual changes decline in severity from diagnosis to follow-up.

Adults with endogenous Cushing’s syndrome reported that the condition moderately affects their quality of life and causes them to have symptoms about 16 days in a given month, according to findings published in Pituitary.

“Our study aimed to evaluate the ongoing burden of Cushing’s syndrome in order to identify areas of unmet need,” Eliza B. Geer, MD, medical director of the Multidisciplinary Pituitary and Skull Base Tumor Center and associate attending of endocrinology and neurosurgery at Memorial Sloan Kettering Cancer Center, told Healio. “We found that patients with treated Cushing’s continue to experience ongoing symptoms more than half of the days in a given month, miss about 25 workdays per year and need twice the average number of outpatient visits per year, indicating a significant impact on daily function and work productivity. Some of these symptoms, like fatigue and pain, have not been well studied in Cushing’s patients, and need more attention.”

Geer and colleagues administered a cross-sectional survey to 55 adults aged 21 years and older who had been diagnosed with Cushing’s syndrome at least 6 months before the survey and were receiving at least one pharmacologic therapy for their disease (85% women; mean age, 43.4 years). The survey was conducted online from June to August 2021. Five patient-reported outcome scales were included. The CushingQoL was used to analyze quality of life, a visual analog scale was included to assess pain, the Brief Fatigue Inventory was used to measure fatigue, the Sleep Disturbance v1.0 scale assessed perceptions of sleep and the PROMIS Short Form Anxiety v1.0-8a scale was used to measure fear, anxious misery, hyperarousal and somatic symptoms related to arousal. Participants self-reported the impact of Cushing’s syndrome on daily life and their physician’s level of awareness of Cushing’s syndrome.

Some symptoms decline in severity over time

Of the study group, 81% had pituitary or adrenal tumors, and 20% had ectopic adrenocorticotropic hormone-producing tumors; 80% of participants underwent surgery to treat their Cushing’s syndrome.

The frequency of reported symptoms did not change from Cushing’s syndrome diagnosis to the time of the survey. The most frequently reported symptoms were weight gain, muscle fatigue and weakness and anxiety.

Participants reported a decline in symptom severity for weight gain, muscle fatigue and weakness and menstrual changes from diagnosis to the survey. Though symptom severity declined, none of the three symptoms were entirely eliminated. Adults did not report declines in severity for other symptoms. Hirsutism and anxiety were reported by few participants, but were consistently scored high in severity among those who reported it. There were no changes in patient satisfaction with medications from their first appointment to the time of the survey.

“It was surprising that anxiety and pain did not improve with treatment,” Geer said. “A quarter of patients at baseline reported anxiety and this percentage was exactly the same after treatment. Same for pain — nearly a quarter of patients reported pain despite treatment. While the presence of anxiety has been well-documented in Cushing’s patients, pain has not, and needs further study.”

Nearly half of primary care providers unable to diagnose Cushing’s syndrome

All participants reported having at least one challenge with being diagnosed with Cushing’s syndrome. Of the respondents, 49% said their primary care provider was unable to diagnose their Cushing’s syndrome and 33% initially received the wrong diagnosis. Physicians referred 49% of participants to a specialist, and 39% of adults said their doctor lacked knowledge or understanding of their condition.

The study group had a moderate level of quality of life impairment as assessed through the CushingQoL scale. The mean pain score was 3.6 of a possible 10, indicating low levels of pain. Moderate to severe levels of fatigue were reported by 69% of participants. Self-reported sleep and anxiety scores were similar to what is observed in the general population.

Participants said sexual activity, self-confidence and life satisfaction were most impacted by a Cushing’s syndrome diagnosis. Adults experienced symptoms a mean 16 days in a typical month and saw their outpatient physician an average of six times per year. Those who were employed said they miss 2 days of work per month, or about 25 days per year, due to Cushing’s syndrome.

“Longitudinal assessment of clinically relevant patient-reported outcomes based on validated measures and coupled with biochemical and treatment data is needed in a large cohort of Cushing’s patients,” Geer said. “This will allow us to identify clinically meaningful changes in symptom burden within each patient, as well as predictors of outcomes — which patients improve on which symptoms, and which patients do not feel better despite biochemical normalization. We need to improve our ability to help our patients feel better, not just achieve normal cortisol levels.”

For more information:

Eliza B. Geer, MD, can be reached at geere@mskcc.org.

From https://www.healio.com/news/endocrinology/20230830/adults-with-cushings-syndrome-report-high-burden-of-illness-despite-ongoing-treatment

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Asymptomatic Pheochromocytoma Associated with MEN Syndrome and Subclinical Cushing’s Syndrome

Posted on August 23, 2023 by MaryO

Abstract

Introduction and importance

Pheochromocytoma and Cushing’s syndrome are rare endocrine conditions caused by tumors in the adrenal gland. These conditions are classified under Multiple Endocrine Neoplasia (MEN) syndrome, characterized by the development of multiple tumors in the endocrine system. However, diagnosing these conditions can be challenging as they often lack clear symptoms, requiring careful evaluation, monitoring, and treatment to prevent complications.

Case presentation

A 23-year-old male recently presented with right-sided abdominal fullness and lipoma-like masses on the torso. Over a span of six months, the abdominal mass nearly doubled in size, accompanied by elevated levels of catecholamines, cortisol, parathyroid hormone (PTH), and calcitonin. Surprisingly, the patient remained asymptomatic despite these abnormal lab values. CT imaging revealed a substantial increase in the size of the mass in the right adrenal gland, from 6 × 7 cm to approximately 11.2 × 10.2 × 9 cm.

Clinical discussion

Pheochromocytoma secretes catecholamines and often leads to hypertension and related symptoms. Interestingly, most individuals with pheochromocytoma do not exhibit obvious symptoms, necessitating blood and urine tests, along with imaging studies, for accurate diagnosis. The size of the tumor does not necessarily indicate the severity of symptoms. MEN-2, a genetic syndrome, is characterized by pheochromocytoma, medullary thyroid carcinoma, and hyperparathyroidism. Additionally, methods for diagnosing Cushing’s syndrome, caused by excess cortisol production, are discussed.

Conclusion

Early diagnosis and genetic counseling are crucial in preventing complications associated with these conditions. By identifying them, appropriate treatment can be ensured for positive outcomes of patients and their families.

Keywords

Pheochromocytoma
Multiple Endocrine Neoplasia (MEN) syndrome
Cushing’s syndrome
Rare Case Report

Abbreviations

CT

computed tomography

MRI

Magnetic resonance imaging

USG

Ultrasonography

131I-MIBG

iodine 131 labeled meta-iodobenzylganidine

RAAS

Renin-angiotensin-aldosterone system

    1. Introduction

    Pheochromocytoma are catecholamine secreting tumors of chromaffin cells of adrenal medulla. It can be found anywhere in the body, with the majority being intra-abdominal and those other than adrenal medulla are referred to as paragangliomas [1,2]. Pheochromocytoma typically secretes norepinephrine and epinephrine, with norepinephrine being the primary catecholamine. However, some tumors may only secrete one of the two, and rarely, some may secrete dopamine or dopa [3].

    Vast majority >90 % of adrenal neoplasms are benign non-functional adenomas [4].About 10 % of pheochromocytomas are malignant and 10 % of cases are found on both sides. Additionally, approximately 40 % of pheochromocytomas are caused by genetic factors and can be associated with inherited syndromes [5].

    Pheochromocytoma is found to be associated with MEN-2. MEN-2 is a hereditary genetic condition that is caused by a de novo mutation in the RET gene. It is inherited in an autosomal dominant fashion and is mainly characterized by medullary thyroid carcinoma, pheochromocytoma and parathyroid adenoma or hyperplasia [6].

    MEN syndrome can be MEN-1, MEN-2A and MEN-2B. MEN-1 is characterized by pituitary tumors (prolactin or growth hormone), pancreatic endocrine tumors and parathyroid adenomas. Additionally, other tumors such as foregut carcinoids, adrenocortical adenomas, meningioma, lipomas, angiofibromas and collagenomas may also occur in MEN-1. MEN-2A is characterized by medullary thyroid carcinoma, pheochromocytoma, and parathyroid adenoma/hyperplasia; it can also be associated with cutaneous lichen amyloidosis and Hirschsprung disease. On the other hand, MEN-2B is characterized by familial medullary thyroid cancer, pheochromocytoma, mucosal neuromas, gastrointestinal tract issues, musculoskeletal and spinal problems. [7].

    Cushing syndrome results from hypercortisolism and is characterized by hypertension, weight gain, easy bruising, and central obesity [4]. Cushing’s disease refers to ACTH-dependent cortisol excess caused by a pituitary adenoma, while ACTH-independent cortisol excess due to non-pituitary causes such as excess use of glucocorticoids, adrenal adenoma, hyperplasia, or carcinoma is referred to as Cushing syndrome [8].

    This case report has been written according to the SCARE checklist [9].

    2. Case presentation

    A 23-year-old male presented to our surgery department with the chief complaint of right sided abdominal fullness for six months. According to the patient a mass was incidentally reported six months back while he was under-evaluation for mild trauma due to road traffic accident. Six months back, the mass was approximately 6 × 7 cm, while at the time of presentation to our department the mass was approximately 11.2 × 10.2 × 9 cm (CT abdomen) which was globular in shape, had regular margin, and moved with respiration. He had no history of hypertension, headache, palpitation, sweating, pallor, recent weight loss, abdominal pain, psychological disturbance, dizziness, loss of consciousness, dark color urine, burning micturition, had normal bowel and bladder habit.

    Past history and family history were insignificant. He was not under any long-term medication and no known drug allergies. He occasionally smokes and consumes alcohol.

    On physical examination at the time of presentation, multiple soft, mobile, painless, subcutaneous nodules like lipoma were present over the torso. His height was 176.8 cm, weight 68 kg, BMI 21.8 kg/m2 (body mass index). He had blood pressure of 110/70 mm of Hg taken in left arm at sitting position, heart rate of 62 beats/min, respiratory rate of 24/min, temperature of 96.6 °F, SPO2 of 98 % at right hand. A mass was palpable on the right side of abdomen, otherwise abdomen was soft, non-tender, normal bowel sound was present. Chest, cardiac and neurologic examinations were all normal.

    Initial laboratory evaluation revealed 24 h. urine metanephrine of 5415 μg/24 h (normal: 25–312 μg/24 h.); 24 h. urine VMA of 32.2 mg/24 h. (normal: <13.60 mg/24 h.); serum cortisol of 535.16 nmol/l after overnight low dose dexamethasone(1 mg) suppression test (normal: <50 nmol/l);24 h. Urine free cortisol of 526.61 nmol/24 h. (normal: 30–145 nmol/24 h) PTH(intact) of 89.2 pg./ml (normal: 15–65 pg./ml); serum calcitonin of 15.2 pg./ml (normal: ≤8.4 pg./ml); serum CEA of 4.72 ng/ml (normal: 0.0–4.4 ng/ml); serum DHEA of 1.19 ng/ml (normal: 1.7–6.1 ng/ml). Baseline investigation: Hematology, urine routine/microscopic, electrolytes were within the normal range.

    Additional laboratory findings were as in the Table 1.

    Table 1.

    Lab evaluation Result Reference Unit
    Metanephrine, urine 24 h 5415 25–312 μg/24 h
    VMA, urine 24 h 32.2 <13.60 mg/24 h
    VMA, urine 12.88 – ng/l
    Cortisol, serum, overnight DST 535.16 <50 nmol/l
    Cortisol, urine 24 h 526.61 30–145 nmol/24 h
    ACTH, complete 28.3 7.2–63.3 pg/ml
    DHEA, serum 1.19 1.7–6.1 ng/ml
    CEA, serum 4.72 0.0–4.4 ng/ml
    Phosphorus, serum 3.0 2.5–4.5 mg/dl
    Albumin, serum 5.2 3.5–5.2 g/dl
    Calcitonin, serum 15.2 ≤8.4 pg/ml
    Calcium, serum 8.94 8.6–10.0 mg/dl
    PTH (intact) 89.2 15–65 pg/ml
    aldosterone 8.7 7.0–30 g/dl
    Plasma rennin activity 1.42 0.10–6.56 ng/ml/h
    Aldosterone-rennin ratio 6.13 ≤20
    Creatinine, urine 36 – mg/dl

    DST – dexamethasone suppression test; VMA – vanilmandelic acid; ACTH – adrenocorticotropic hormone; DHEA – dehydroepiandrosterone; CEA – carcino-embryonic-antigen; PTH – parathyroid hormone.

    2.1. USG abdomen

    USG abdomen (Fig. 1, Fig. 2) showed well defined mixed echoic area in Right adrenal region measuring 12.7 × 10.7 cm in size. There was presence of internal vascularity with multiple foci of cystic compound. The lesion displaced the right kidney inferiorly.

    Fig. 1

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    Fig. 1. USG abdomen.

    Fig. 2

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    Fig. 2. USG abdomen.

    2.2. Plane and contrast CT scan of abdomen

    Plane and contrast CT scan of Abdomen (Fig. 3) showed approximately 11.2 × 10.2 × 9 cm sized, relatively well defined heterogeneous soft tissue density lesion with well-defined enhancing wall in right adrenal region. Non-enhancing areas were noted within the mass suggestive of necrosis. Few calcific foci were noted within the mass with no obvious hemorrhagic component. The lesion showed heterogeneous enhancement post contrast image.

    Fig. 3

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    Fig. 3. CT abdomen.

    After all the workup patient was given diagnosis of right sided Pheochromocytoma associated with MEN syndrome, with ACTH-independent Cushing’s syndrome and right adrenalectomy was performed.

    2.3. Pathology report

    2.3.1. Gross descriptions

    The specimen was globular mass measuring 14.5 × 10 cm, with smooth outer surface. On sectioning, the mass was well circumscribed, soft and yellow-brown, predominantly solid with cyst formation. The size of cyst ranges from 0.3 to 3.5 cm in diameter. Areas of hemorrhages were noted.

    2.3.2. Microscopic description

    Section showed tumor cells arranged in well-defined nests (Zellballen), alveolar and diffuse pattern with intervening fibrovascular stroma. The cells were intermediate to large sized, polygonal with finely granular amphophilic cytoplasm. The nuclei showed mild to moderate pleomorphism and were round to ovoid, with prominent nuclei noted. No capsular invasion, vascular invasion and necrosis. Areas of hemorrhage were seen. Mitosis 0–1/10 high power field was noted (Figs. 4 and 5).

    Unlabelled Image

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    Fig.a Diffuse Zellbalen pattern with intervening fibrous stroma.

    Fig.b Mild to moderate pleomorphic nuclei with abundant hemorrhage.

    Fig.c Low power field with intact capsule.

    Figs. 4 and 5

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    Figs. 4 and 5. Fig. 4 Intra-operative resection of tumor; Fig. 5 tumor after resection.

    3. Discussion

    In Pheochromocytoma activation of the alpha-one adrenergic receptor by catecholamine in the vascular bed causes vasoconstriction and leads to a rise in blood pressure. Similarly, activation of the beta-one receptor in the heart enhances the chronotropic and inotropic effect of the myocardium, leading to an increase in heart rate and cardiac output. In addition, activation of the beta-one receptor in the juxtaglomerular cells of the kidney activates the RAAS system. These receptor activation result in cardiovascular and sympathetic changes, such as hypertension, palpitation, headache, sweating, trembling, and anxiety [10].

    In Pheochromocytoma, the patient may have a 10-fold increase in plasma catecholamines, but the hemodynamic response can still fall within the normal range due to desensitization of the cardiovascular system. When catecholamine levels are elevated for a prolonged period, the alpha-one receptors in blood vessels may be down-regulated, making norepinephrine unresponsive in raising peripheral vascular resistance, which can lead to normal blood pressure. Similarly, a marked decrease in beta-one receptors in the heart could explain the normal heart rate, which was observed in our asymptomatic patient with Pheochromocytoma [11].

    Sometimes in asymptomatic patients, the size of the tumor tends to be larger than in those with hyperfunctioning tumors [12]. However, medical interventions such as surgery, anesthesia induction, intravenous urography contrast, or manipulation of the tumor can trigger adrenergic and hypertensive crises, so biopsy is usually contraindicated in pheochromocytoma [13].

    The diagnosis of pheochromocytoma is typically based on measuring plasma and urinary levels of catecholamines and their derivatives such as metanephrine and vanillylmandelic acid. The most reliable test is the measurement of urinary metanephrine as its excretion levels are relatively higher [13,14]. The combination of 131I-MIBG scintigraphy along with diagnostic urinary and blood tests can further enhance the sensitivity of the test. Specifically, the urinary normetanephrine test is considered the most sensitive single test for detecting Pheochromocytoma [15,16].

    In addition to a 24-h urine test and blood test, if the lab results are positive for Pheochromocytoma or paragangliomas, further diagnostic tests may be recommended, such as a CT scan, MRI, m-iodobenzylganidine (MIBG) imaging, or positron emission tomography (PET) [16,17]. In our patient 24 h. urine metanephrine of 5415 μg/24 h (normal: 25–312 μg/24 h.); 24 h. urine VMA of 32.2 mg/24 h. (normal: <13.60 mg/24 h.) and imaging confirmation of right adrenal mass lead to the diagnosis of right sided pheochromocytoma.

    Our patient with pheochromocytoma was tested for parathyroid hormone and calcitonin due to the association of pheochromocytoma with MEN-2 [18]. MEN-2 can be diagnosed biochemically by measuring the baseline levels of calcitonin, parathyroid hormone and serum calcium along with blood tests for catecholamines and their metabolites to detect pheochromocytoma [19]. In our patient, multiple soft, mobile, painless, subcutaneous nodules like lipoma were present over the torso(MEN-1) and high levels of parathyroid hormone and calcitonin were detected(MEN-2). These findings can be correlated with MEN syndrome.

    USG of the neck revealed no abnormalities of thyroid and parathyroid gland in our patient so prophylactic thyroidectomy was not done, instead he was counseled for follow up if any symptoms or thyroid swelling appears.

    The diagnosis of Cushing’s syndrome typically involves measuring the levels of 24-h urine free cortisol and assessing the suppression of cortisol in response to a 1 mg overnight dexamethasone test. If cortisol levels remain elevated despite the test, the next step is to measure serum ACTH levels. If ACTH levels are suppressed, it suggests an ACTH-independent cause of Cushing’s syndrome, while elevated ACTH levels suggest an ACTH-dependent cause. Further evaluation may include a CT scan of the chest, abdomen, and pelvis to identify potential ectopic sources, as well as an MRI of the pituitary gland [8]. Our patient had a high level of 24 h. urine free cortisol of 526.61 nmol/24 h (reference range: 30–145 nmol/24 h) and serum cortisol of 535.16 nmol/L(reference range: <50 nmol/L) after overnight 1 mg dexamethasone suppression test, but normal level of ACTH of 28.3 pg./ml (reference range: 7.2–63.1 ng/ml), this suggests the diagnosis of ACTH independent Cushing’s syndrome.

    4. Conclusion

    Large Pheochromocytoma patients can be asymptomatic and can present in association with other endocrine disorders. So proper evaluation is necessary to find out associated conditions and manage accordingly to prevent the possible outcomes.

    Patient consent

    Written, informed consent was obtained from the patient for the publication of the report.

    Ethical approval

    It is exempted at my institution. We don’t need to take approval from ethical committee for case report.

    Funding

    N/A.

    Author contribution

    Conceptualization: Sanjit Kumar Shah.

    Clinical diagnosis and patient management: Mahipendra Tiwari.

    Microscopic slide preparation: Sneh Acharya.

    Writing original draft: Sanjit Kumar Shah and Avish Shah.

    All authors were involved in reviewing, editing, supervision and in preparing the final

    manuscript.

    Guarantor

    Guarantor: Sanjit Kumar Shah

    Email: sanjitshah023@gmail.com

    Conflict of interest statement

    N/A.

    References

    Filed under: adrenal, Cushing's, Rare Diseases, symptoms | Tagged: , , , | Leave a comment »

    Treatment-Resistant Depression with Acute Psychosis in an Adolescent Girl with Cushing’s Syndrome

    Posted on August 21, 2023 by MaryO

    Cushing’s syndrome (CS) is a rare disease with multiple somatic signs and a high prevalence of co-occurring depression. However, the characteristics of depression secondary to CS and the differences from major depression have not been described in detail. In this case, we report a 17-year-old girl with treatment-resistant depression with a series of atypical features and acute psychotic episodes, which is a rare condition secondary to CS. This case showed a more detailed profile of depression secondary to CS and highlighted the differences with major depression in clinical features, and it will improve insight into the differential diagnosis especially when the symptoms are not typical.

    Introduction

    Depression is a chronic medical problem with typical features, including sadness, decreased interest and cognitive impairments. In clinical practice, depression can occur in other medical conditions, especially endocrinopathies, making it a more complex problem and exhibiting a challenge in diagnosis, especially in first-contact patients or when the clinical presentations are atypical. It is generally accepted that patients who failed to respond to two or more adequate trials of first-line antidepressants for treatment of major depressive episode are considered to have treatment-resistant depression (TRD) (1). For patients with TRD, a throughout evaluation should be performed to investigate the underlying organic causes.

    Cushing’s syndrome is a rare but serious endocrine disease due to chronic exposure to excess circulating glucocorticoids with multisystem effects (2). The etiology of CS can be divided into adrenocorticotropic hormone (ACTH)-dependent and ACTH-independent. It is characterized by a series of clinical features suggesting hypercortisolism, for example, metabolic abnormalities, hypertension and bone damages (3). A variety of neuropsychiatric symptoms, such as mood disturbance, cognitive impairment and psychosis, also occur in more than 70% CS patients (4). CS is life-threating if not timely diagnosed and treated, however, correct diagnosis can be delayed due to the wide range of phenotypes, especially when they are not classical (5).

    Previous studies suggested that major depression was the most common co-morbid complication in CS patients, with a prevalence of 50–81% (6). Haskett’s study confirmed that 80% of subjects meet the criteria for major depression with melancholic features (7). As reported in most recent investigations, depression in CS was not qualitatively different from non-endocrine major depression and the similarity was even striking (3, 8). However, some studies showed different conclusions and suggested a high prevalence of atypical depressive features other than melancholic features in CS (9). TRD and anxious depression has also been reported in CS patients (10, 11). All of the above conclusions suggest the complexity of depression with CS, and no distinct features have been found pertaining to hypercortisolism (12, 13). Although the intensity of depression secondary to CS is severe, suicidal depression is still an unusual condition (14).

    Psychosis is a rare manifestation of CS, and the literature is limited. Only a few cases have been reported so far, especially combined with depression episode. In this case report, we presented a girl with CS, who experienced suicidal depression with a series of atypical features and acute psychotic symptoms, which was rarely reported in previous studies.

    Case description

    A 17-year-old girl with major depression for 3 years was involuntarily admitted for severe depressed mood with suicide attempts (neck cutting; tranquilizer overdose) and paranoid state in the last 2 weeks without any precipitating factors.

    She experienced depressed and irritable mood in the last 3 years, and her condition had not improved although several adequate trials of antidepressants were used with satisfactory compliance (sertraline 200 mg/d; escitalopram oxalate 20 mg/d). Over the 2 weeks prior to admission, her depression continued to worsen with increasing irritability, she committed several suicide attempts, and once stated that she was unsafe at home. On admission, her heart rate was 116 bpm with blood pressure 139/81 mmHg and normal temperature; physical examination showed a cushingoid and virilising appearance (central obesity, swollen and hirsute face with acne, purple striae on the abdomen and bruises on the arms). No other abnormal signs were noted. She seemed drowsy but arousable, and she walked slowly, with bent shoulders and an inclined head. Mental state examination was hard to continue because she was passive and reluctant to answer our questions. Venlafaxine 150 mg/d has been used for more than 3 months with poor effects at that time.

    Besides, weight gain (25 kg), irregular menstrual cycles and numbness of the hands and feet in the last half year were reported by her parents. Otherwise, No episodes of elevated mood and hyperactivity were found during the history taking. She does not have remarkable family history of serious physical or psychiatric illness; she was healthy, had an extroverted personality and had never used substances. Her premorbid social function and academic performance were good.

    Several clinical characteristics found during the following mental state examinations were listed as follows:

    • Prominent cognitive impairment without clouding of consciousness: Forgetfulness was frequently noted; she easily forgot important personal information such as her school and grade; she could not recall the suicide attempt committed recently and perfunctorily ascribed it to a casual event; and it was hard for her to recall her medical history (as it is for other depressive patients). The serial seven subtraction task could not be finished, and the interpretation of the proverb was superficial. Difficulty was found in attention maintenance; an effective conversation was hard to perform because she was mind-wandering (we needed to call her name to get her immediate attention) and often interrupted our conversations by introducing irrelevant topics or leaving without apparent reasons.

    • Decreased language function that did not match her educational background: The patient could not find the proper words to articulate her feelings; instead, many simple, obscure and contradictory words were used, which made her response seem perfunctory. For example, she responded with “I do not know,” “I forgot,” or kept silent in response to our questions, which made the conversations hard to perform.

    • Psychotic outbursts: Once she left the psychological therapy group, ranted about being persecuted and shook in fearfulness, stated “call the police” repeatedly, negative of explanations and comforts from others, but she cannot give any explanation about her behavior when calmed down. Sometimes she worried about being killed by the doctors but the worries were transient and fleeting.

    • Depressed mood and negative thoughts (self-blame, worthlessness, and hopelessness) that were not persistent and profound: During most of her hospitalization, the patient seemed confused and apathetic, with intermittent anxiety, but she could not clearly express what made her anxious. Her crying and sadness happened suddenly, without obvious reasons, and she even denied low mood sometimes and said she had come to the hospital for cardiac disease treatment (she did not have any cardiac disease). Her description of her depressed mood was uncertain when specifically questioned, and she rarely reported her depressed feeling spontaneously as other depressed patients would. She did not even have the desire to get rid of her “depression”. Her suicidal ideation was transient and impulsive, and she could not provide a comprehensive explanation for her suicide attempts, such as emptiness, worthlessness or guilt. She was impatient and restless when interacting with others or when a more in-depth conversation was performed. She seemed apathetic, gave little response to emotional support from others and did not care about relevant important issues, such as hospital discharge or future plans. Elevated mood and motor activity were not found during the admission period.

    • Social withdrawal and inappropriate behaviors: The patient often walked or stayed alone for long periods of time before speaking to other patients suddenly, which seemed improper or even odd in normal social interactions. During most hospitalization periods, lethargy and withdrawal were obvious.

    Diagnostic assessment and therapeutic interventions

    Basic laboratory tests reported abnormal results (Table 1), and the circulating cortisol level was far beyond the upper limit of normal, with a loss of circadian rhythm (Table 2); 24-h urinary free cortisol : >2897 nmol/24 h↑(69–345 nmol/24 h); serum ACTH (8 AM, 4 PM, 12 PM): 1.2 pg/ml, 1.3 pg/ml, <1 pg/ml (normal range: 1–46 pg/ml); low-dose dexamethasone suppression test (1 mg) (cortisol value): 1010.1 nmol/l (not suppressed; normal range: <50 nmol/L); high dose dexamethasone inhibition test (cortisol value): 879.0 nmol/l (not suppressed); OGTT and glycosylated hemoglobin; both normal. Other results used to rule out hyperaldosteronism and pheochromocytoma, such as the aldosterone/renin rate (ARR) and the vanillylmandelic acid, dopamine, norepinephrine and epinephrine levels, were reported to be within normal limits; ECG suggested sinus tachycardia; dual-energy X-ray bone density screening values were lower than the normal range; B-mode ultrasound showed a right adrenal tumor and fatty liver. The abdominal CT scan showed a tumor in her right adrenal gland. Brain MRI showed no abnormalities. Psychometric tests including HAMD (Hamilton depression scale), MADRS (Montgomery-Asberg Depression Rating Scale), WAIS (Wechsler Intelligence Scale) and MMSE (Mini-mental State Examination) were hard to perform due to her poor attention and non-cooperation presentation.

    Table 1
    www.frontiersin.orgTable 1. Abnormal lab results for the patient.

    Table 2
    www.frontiersin.orgTable 2. Circulating cortisol level.

    The patient had little response to adequate antidepressants in our hospital, including fluoxetine 20–60 mg/d and aripiprazole 5–30 mg/d combined with 3 sessions of MECT (modified electroconvulsive therapy), which was stopped because of her poor cognitive function and poor response.

    Her last diagnosis was right adrenal adenoma and non-ACTH-dependent Cushing’s syndrome. The adrenal adenoma was excised through laparoscopic resection in a general hospital. Hydrocortisone, amlodipine besylate, potassium chloride, metoprolol and escitalopram were used for treatment. Escitalopram 10 mg/d has been used until 2 weeks after her discharge. At the follow-up visit about 1 month after the surgery, her depressive mood had significantly improved, with no self-injury behaviors or psychiatric symptoms found. The patient was calm but still reacted slowly, and cognitive impairment was still found at the last visit.

    Discussion

    Previous studies have reported a close association between CS and depression (15). However, suicidal depression with atypical features and acute psychosis have rarely been reported, and the characteristics of depression secondary to CS and the differences from major depression have not been described in detail.

    This case did not show a full-blown presentation of major depression according to the DSM-5. She presented with a series of features that were not typical as major depression, however, it should be emphasized that the atypical features were not identical to those noted in DSM5, especially regarding increased appetite and hypersomnia. The features suggesting difference from major depression were listed as follows: (a) depressed mood is not constant, it does not exist in most of the day; it is episodic without regular cyclicity, can happen or exacerbate suddenly; (b) the ability to describe anhedonia is poor, she can’t report her feeling voluntarily like other patients with major depression, which might be partially related with the decreased language function; (c) depressive thoughts such as self-accusation and feelings of guilt, the classical symptoms of major depression, were rarely found; (d) more exaggerated cognitive impairment and decrease language function; € partial or little useful effect of SSRIs (selective serotonin reuptake inhibitors). The above characteristics were similar to those reported in Starkman’s research (13, 16, 17), in which increasing irritability was also regarded as one of the important features for depression in CS.

    The literature about depression combined with psychosis episode in CS is rare. This patient showed acute episodes of persecutory delusion with disturbed behaviors; her psychotic symptoms occurred suddenly and were fragmentary, with poor sensitivity to antipsychotics; the content was not constant (she never referred to and even denied the unsafe feeling at home before admission), it changed with the environment and was not consistent with the mood state. However, we cannot reach an effective conclusion because the evidence was small; thus, these findings should be evaluated in combination with other clinical presentations.

    Conclusion

    Most reviews have concluded that mood disturbances in CS indicate “major depression”, but the detailed description of clinical features are lack, making clinicians uncertain about the presentation and confused about the diagnosis, especially when the somatic signs are indiscriminate. The clinical presentation in this case highlighted the fact that there is a wide range of phenotypes of depression in CS, for some CS patients, the depressive features are not highly consistent with the criteria of major depression regardless of the melancholic or atypical features in the DSM-5. Thus, a thorough and periodic evaluation is necessary to detect the underlying organic and psychosocial causes if the clinical symptoms are not typical (10).

    Data availability statement

    The original contributions presented in the study are included in the article/supplementary material, further inquiries can be directed to the corresponding author.

    Ethics statement

    Written informed consent was obtained from the individual(s), and minor(s)’ legal guardian/next of kin, for the publication of any potentially identifiable images or data included in this article.

    Author contributions

    XY, SC, XJ, and XH were responsible for clinical care. XY did literature search and drafted the manuscript. XH revised the manuscript. All authors contributed to the article and have approved the final manuscript.

    Acknowledgments

    We want to thank Juping Fu, Ying Zhang, and all other medical staff who gave careful nursing to the patient.

    Conflict of interest

    The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

    Publisher’s note

    All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

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    Keywords: Cushing’s syndrome (CS), treatment-resistant depression, acute psychosis, adrenal adenoma (AA), adolescent girl

    Citation: Yin X, Chen S, Ju X and Hu X (2023) Case report: Treatment-resistant depression with acute psychosis in an adolescent girl with Cushing’s syndrome. Front. Psychiatry 14:1170890. doi: 10.3389/fpsyt.2023.1170890

    From https://www.frontiersin.org/articles/10.3389/fpsyt.2023.1170890/full

    Filed under: Cushing's, symptoms | Tagged: , , | Leave a comment »

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