Surgical Removal of Pituitary Adenomas Through the Nose Remains an Effective Treatment for Pediatric Patients

Removal of pituitary adenomas by inserting surgical instruments through the nose (transsphenoidal resection) remains the best treatment option for pediatric patients, despite its inherent technical difficulties, a new study shows.

The study, “Transsphenoidal surgery for pituitary adenomas in pediatric patients: a multicentric retrospective study,” was published in the journal Child’s Nervous System.

Pituitary adenomas are rare, benign tumors that slowly grow in the pituitary gland. The incidence of such tumors in the pediatric population is reported to be between 1% and 10% of all childhood brain tumors and between 3% and 6% of all surgically treated adenomas.

Characteristics of patients that develop these pituitary adenomas vary significantly in different studies with regards to their age, gender, size of adenoma, hormonal activity, and recurrence rates.

As the pituitary gland is responsible for hormonal balance, alterations in hormone function due to a pituitary adenoma can significantly affect the quality of life of a child. In most cases, pituitary adenomas can be removed surgically. A common removal method is with a transsphenoidal resection, the goal of which is to completely remove the growing mass and cause the least harm to the surrounding structures.

In this study, the researchers report the surgical treatment of pediatric pituitary adenomas at three institutions. They collected data from 27 children who were operated for pituitary adenoma using one of two types of transsphenoidal surgeries — endoscopic endonasal transsphenoidal surgery (EETS) and transsphenoidal microsurgery (TMS) — at the University Cerrahpasa Medical Faculty in Istanbul, Turkey, at San Matteo Hospital in Pavia, and at the University of Insubria-Varese in Varese, Italy.

The study included 11 males (40.7%) and 16 females (59.3%), with a mean age of 15.3 (ranging between 4 and 18). Medical records indicated that 32 surgical procedures were performed in the 27 patients, as six children required a second operation. Among the patients, 13 had Cushing’s disease, while the rest had growth-hormone-secreting adenomas, prolactinomas, or non-functional adenomas.

The researchers found that most patients underwent remission following their surgery. Among the 27 patients, 22 patients (81.4%) underwent remission while five patients (18.5%) did not. Four patients underwent remission after a second operation.

Based on these findings, the team believes that the transsphenoidal surgical approach adequately removes pituitary tumors and restores normal hormonal balance in the majority of pediatric patients with pituitary adenomas.

“Satisfactory results are reported with both EETS and TMS in the literature,” they wrote. “Despite the technical difficulties in pediatric age, transsphenoidal resection of adenoma is still the mainstay treatment that provides cure in pediatric patients.”

From https://cushingsdiseasenews.com/2019/05/30/transsphenoidal-surgery-effective-remove-pituitaty-adenomas-children-study/

Transsphenoidal Surgery Recommended for Cushing Disease With Inconclusive or Normal MRI

In patients with a diagnosis of Cushing disease in whom magnetic resonance imaging (MRI) shows either no abnormalities or nonspecific abnormalities, surgery is preferable to medical treatment, according to study results published in The Journal of Clinical Endocrinology & Metabolism.

There is a consensus that the first line of treatment for Cushing disease is transsphenoidal surgery to remove the pituitary adenoma causing the disease, with an 80% remission rate following the intervention. However, in the absence of clear evidence of a pituitary adenoma on imaging, there is some controversy regarding the best treatment.

The goal of this retrospective single-center study was to assess the outcomes of surgery in patients with Cushing disease with clear evidence of a pituitary adenoma on MRI compared with outcomes in patients with inconclusive or normal MRI.

The cohort included 195 patients treated with transsphenoidal surgery between 1992 and 2018 (156 women; mean age at surgery, 41 years) classified into 4 MRI groups: 89 patients were found to have microadenoma, 18 had macroadenoma, 44 had nonspecific/inconclusive abnormalities on MRI results, and 44 had normal imaging results.

The researchers reported that MRI performance in their neuroradiology department improved with time; the proportion of inconclusive or normal MRI results decreased from 60% in 1992 to 1996 to 27% in 2012 to 2018 (P =.037).

In analyzing the influence of MRI findings on remission rates, the researchers found no significant difference among the 4 groups: remission rate was 85% for microadenomas, 94% for macroadenomas, 73% for inconclusive MRI, and 75% for negative MRI (P =.11). This finding indicates the overall percentage of patients in remission after transsphenoidal surgery is only slightly lower in those with normal or inconclusive MRI results compared with patients with clear evidence of microadenoma or macroadenoma.

There was no difference in remission rate after a microscopic vs endoscopic surgical approach (P =.16). The researchers found that endoscopic-assisted surgery allowed a higher visualization rate than microscopic-assisted surgery. Although the neurosurgeon had a better visualization rate than MRI (100% vs 72%, respectively), there were some false-positive findings; thus, positive predictive value was similar (84% vs 78%, respectively).

The study had several limitations including the retrospective design. In addition, in light of the long study duration, the researchers noted that changes in MRI technology and surgical procedures occurred over time.

The researchers proposed that after exclusion of nonneoplastic hypercortisolism, patients with Cushing disease, an inconclusive or normal MRI, and a pituitary adrenocorticotropic hormone gradient at bilateral inferior petrosal sampling be directed to an expert neurosurgeon for transsphenoidal surgery rather than treated medically.

 

Reference

Cristante J, Lefournier V, Sturm N, et al. Why we should still treat by neurosurgery patients with Cushing’s disease and a normal or inconclusive pituitary MRI [published online May 14, 2019]. J Clin Endocrinol Metab. doi:10.1210/jc.2019-00333

From https://www.endocrinologyadvisor.com/home/topics/adrenal/transsphenoidal-surgery-recommended-for-cushing-disease-with-inconclusive-or-normal-mri/

New discoveries offer possible Cushing’s disease cure

LOS ANGELES — More than a century has passed since the neurosurgeon and pathologist Harvey Cushing first discovered the disease that would eventually bear his name, but only recently have several key discoveries offered patients with the condition real hope for a cure, according to a speaker here.

There are several challenges clinicians confront in the diagnosis and treatment of Cushing’s disease, Shlomo Melmed, MB, ChB, FRCP, MACP, dean, executive vice president and professor of medicine at Cedars-Sinai Medical Center in Los Angeles, said during a plenary presentation. Patients who present with Cushing’s disease typically have depression, impaired mental function and hypertension and are at high risk for stroke, myocardial infarction, thrombosis, dyslipidemia and other metabolic disorders, Melmed said. Available therapies, which range from surgery and radiation to the somatostatin analogue pasireotide (Signifor LAR, Novartis), are often followed by disease recurrence. Cushing’s disease is fatal without treatment; the median survival if uncontrolled is about 4.5 years, Melmed said.

“This truly is a metabolic, malignant disorder,” Melmed said. “The life expectancy today in patients who are not controlled is apparently no different from 1930.”

The outlook for Cushing’s disease is now beginning to change, Melmed said. New targets are emerging for treatment, and newly discovered molecules show promise in reducing the secretion of adrenocorticotropic hormone (ACTH) and pituitary tumor size.

“Now, we are seeing the glimmers of opportunity and optimism, that we can identify specific tumor drivers — SST5, [epidermal growth factor] receptor, cyclin inhibitors — and we can start thinking about personalized, precision treatment for these patients with a higher degree of efficacy and optimism than we could have even a year or 2 ago,” Melmed said. “This will be an opportunity for us to broaden the horizons of our investigations into this debilitating disorder.”

Challenges in diagnosis, treatment

Overall, about 10% of the U.S. population harbors a pituitary adenoma, the most common type of pituitary disorder, although the average size is only about 6 mm and 40% of them are not visible, Melmed said. In patients with Cushing’s disease, surgery is effective in only about 60% to 70% of patients for initial remission, and overall, there is about a 60% chance of recurrence depending on the surgery center, Melmed said. Radiation typically leads to hypopituitarism, whereas surgical or biochemical adrenalectomy is associated with adverse effects and morbidity. Additionally, the clinical features of hypercortisolemia overlap with many common illnesses, such as obesity, hypertension and type 2 diabetes.

“There are thousands of those patients for every patient with Cushing’s disease who we will encounter,” Melmed said.

The challenge for the treating clinician, Melmed said, is to normalize cortisol and ACTH with minimal morbidity, to resect the tumor mass or control tumor growth, preserve pituitary function, improve quality of life and achieve long-term control without recurrence.

“This is a difficult challenge to meet for all of us,” Melmed said.

Available options

Pituitary surgery is typically the first-line option offered to patients with Cushing’s disease, Melmed said, and there are several advantages, including rapid initial remission, a one-time cost and potentially curing the disease. However, there are several disadvantages with surgery; patients undergoing surgery are at risk for postoperative venous thromboembolism, persistent hypersecretion of ACTH, adenoma persistence or recurrence, and surgical complications.

Second-line options are repeat surgery, radiation, adrenalectomy or medical therapy, each with its own sets of pros and cons, Melmed said.

“The reality of Cushing’s disease — these patients undergo first surgery and then recur, second surgery and then recur, then maybe radiation and then recur, and then they develop a chronic illness, and this chronic illness is what leads to their demise,” Melmed said. “Medical therapy is appropriate at every step of the spectrum.”

Zebrafish clues

Searching for new options, Melmed and colleagues introduced a pituitary tumor transforming gene discovered in his lab into zebrafish, which caused the fish to develop the hallmark features of Cushing’s disease: high cortisol levels, diabetes and cardiovascular disease. In the fish models, researchers observed that cyclin E activity, which drives the production of ACTH, was high.

Melmed and colleagues then screened zebrafish larvae in a search for cyclin E inhibitors to derive a therapeutic molecule and discovered R-roscovitine, shown to repress the expression of proopiomelanocortin (POMC), the pituitary precursor of ACTH.

In fish, mouse and in vitro human cell models, treatment with R-roscovitine was associated with suppressed corticotroph tumor signaling and blocked ACTH production, Melmed said.

“Furthermore, we asked whether or not roscovitine would actually block transcription of the POMC gene,” Melmed said. “It does. We had this molecule (that) suppressed cyclin E and also blocks transcription of POMC leading to blocked production of ACTH.”

In a small, open-label, proof-of-principal study, four patients with Cushing’s disease who received roscovitine for 4 weeks developed normalized urinary free cortisol, Melmed said.

Currently, the FDA Office of Orphan Products Development is funding a multicenter, phase 2, open-label clinical trial that will evaluate the safety and efficacy of two of three potential doses of oral roscovitine (seliciclib) in patients with newly diagnosed, persistent or recurrent Cushing disease. Up to 29 participants will be treated with up to 800 mg per day of oral seliciclib for 4 days each week for 4 weeks and enrolled in sequential cohorts based on efficacy outcomes.

“Given the rarity of the disorder, it will probably take us 2 to 3 years to recruit patients to give us a robust answer,” Melmed said. “This zebrafish model was published in 2011, and we are now in 2019. It has taken us 8 years from publication of the data to, today, going into humans with Cushing’s. Hopefully, this will light the pathway for a phase 2 trial.”

 Offering optimism’

Practitioners face a unique paradigm when treating patients with Cushing’s disease, Melmed said. Available first- and second-line therapy options often are not a cure for many patients, who develop multimorbidity and report a low quality of life.

“Then, we are kept in this difficult cycle of what to do next and, eventually, running out of options,” Melmed said. “Now, we can look at novel, targeted molecules and add those to our armamentarium and at least offer our patients the opportunity to participate in trials, or at least offer the optimism that, over the coming years, there will be a light at the end of the tunnel for their disorder.”

Melmed compared the work to Lucas Cranach’s Fons Juventutis (The Fountain of Youth). The painting, completed in 1446, shows sick people brought by horse-drawn ambulance to a pool of water, only to emerge happy and healthy.

“He was imagining this ‘elixir of youth’ (that) we could offer patients who are very ill and, in fact, that is what we as endocrinologists do,” Melmed said. “We offer our patients these elixirs. These Cushing’s patients are extremely ill. We are trying with all of our molecular work and our understanding of pathogenesis and signaling to create this pool of water for them, where they can emerge with at least an improved quality of life and, hopefully, a normalized mortality. That is our challenge.” – by Regina Schaffer

Reference:

Melmed S. From zebrafish to humans: translating discoveries for the treatment of Cushing’s disease. Presented at: AACE Annual Scientific and Clinical Congress; April 24-28, 2019; Los Angeles.

Disclosure: Melmed reports no relevant financial disclosures.

 

From https://www.healio.com/endocrinology/neuroendocrinology/news/online/%7B585002ad-640f-49e5-8d62-d1853154d7e2%7D/new-discoveries-offer-possible-cushings-disease-cure

Hormonal Imbalance – Indication of Pituitary Gland Tumors

Patna: Improper functioning of the Pituitary gland usually results in excess or under production of hormones that leads to a formation of mass called tumor, which can be benign or malignant. Such tumors in this gland can create numerous serious medical conditions by interfering with the normal functioning of the endocrine system and pituitary gland.

 

“Though the occurrence of tumor is more likely after the age of 30 years, it still can impact at an early age. The survival rates of tumor due to its complicated location also depend on other factors like the patient’s age, type and size of tumor. Mostly, pituitary gland tumors are non cancerous but the exact causes are unknown. Some of them are hereditary and some are caused by a rare genetic disorder called as multiple endocrine neoplasia type 1. This disorder can also lead to over-activity or enlargement of 3 different endocrine-related glands, which also includes the pituitary gland. “Dr Aditya Gupta, Director, Neurosurgery, Agrim institute for neuro sciences, Artemis Hospital

 

Diagnosis at an early stage can help the treatment procedure to be totally non-invasive with the use of advances technology called as Cyberknife. Cyberknife which is the most advanced radiation therapy is completely non-invasive therapy available for the treatment of benign as well as malignant tumors. This therapy works the best for some pituitary tumors that are upto 2 cm in size and is a very powerful and effective technique for treating patients suffering from early stage primary and medically inoperable tumors. The treatment is safe to administer and also offers a new option in patients with recurrent disease or a single disease in the body.

 

“Highlights of the therapy being ease of access to any complex location without the need to use the surgical knife, precision of the beam with high dose radiation to the tumor location, and the safety. It is a day care procedure without pain and risk, and the patient can get back to daily chores as soon as the session gets over which depends on the tumor typically (30 minutes) and hence eliminates the requirement of any hospital stay.” Added Dr Gupta

 

Depending upon the hormonal variations in the body, there can be a variety of symptoms. The most common symptoms include Headaches, vision problem, tiredness, mood changes, irritability, changes in menstrual cycle in women, impotence, infertility, Inappropriate breast growth or production of breast milk, Cushing’s syndrome which is a combination of weight gain, high blood pressure, diabetes, and easy bruising, the enlargement of the extremities or limbs, thickening of the skull and jaw caused by too much growth hormone.

 

Pituitary gland, which is also known as the master gland has the most important function of producing hormones that regulates the critical organs of the body including thyroid, adrenal glands, ovaries and testes. It is a small pea-size gland located behind the eyes and below the front of the brain. Some tumors produce hormones known as functional tumors, and others can cause the glands to secrete too few or too many hormones. Also if the tumor pressed on the nearby structure, for instance the optic nerve, can also limit a person’s vision.

 

Moreover the procedure makes use of the most sophisticated image guidance technique to focus high doses of radiation directly to the tumor spot which eliminates the chances to damage the healthy cells as in any other methods of treatment.

 

“Each session of treatment usually lasts for about 30 -50 min and is cost effective with a success rate of 98% in such complicated tumors. Patients with pituitary adenomas receive stereotactic radio surgery with CyberKnife and are followed up for more than 12 months. After 2-3 weeks of therapy patients are monitored for positive responses and ensure there is no recurrence of any mass. Stereotactic radio surgery with the CyberKnife is effective and safe against pituitary adenomas.” Said Dr Gupta

From https://www.apnnews.com/hormonal-imbalance-indication-of-pituitary-gland-tumors-2/

Rare Disease Day 2019

rare disease day

 

Each and every day since 1987,  I tell anyone who will listen about Cushing’s.  I pass out a LOT Cushing’s business cards. My husband also passes out cards and brochures.

Adding to websites, blogs and more which I have maintained continuously since 2000 – at mostly my own expense.

Posting on the Cushing’s Help message boards about Rare Disease Day.  I post there most every day.

Tweeting/retweeting info about Cushing’s and Rare Disease Day today.

Adding info to one of my blogs about Cushing’s and Rare Disease Day.

Adding new and Golden Oldies bios to another blog, again most every day.

Thinking about getting the next Cushing’s Awareness Blogging Challenge set up for April…and will anyone else participate?

And updating https://www.facebook.com/CushingsInfo with a bunch of info today (and every day!)

~~~

Today is Rare Disease Day.

I had Cushing’s Disease due to a pituitary tumor. I was told to diet, told to take antidepressants and told that it was all my fault that I was so fat. My pituitary surgery in 1987 was a “success” but I still deal with the aftereffects of Cushing’s and of the surgery itself.

I also had another Rare Disease – Kidney Cancer, rare in younger, non-smoking women.

And then, there’s the secondary adrenal insufficiency…and growth hormone deficiency

If you’re interested, you can read my bio here: https://cushingsbios.com/2018/10/28/maryo-pituitary-bio/

What are YOU doing for Rare Disease Day?

 

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