View clinical trials related to Pituitary Diseases.
Filter by:Use of dexmedetomidine in pituitary tumor resection surgery as adjuvant drug and its relation to cortisol levels during postoperative period.
Damage to the pituitary gland is a frequently overlooked but potentially important complication of traumatic brain injury (TBI). Disorders of the pituitary gland can cause dysfunction of the thyroid, adrenals, ovaries and testes. These disorders may occur immediately or several months after TBI, may delay recovery and may have a significant negative impact on quality of life. TBI is the leading cause of disability and major permanent functional impairment among adults under 45 years of age. Hormonal deficits may contribute to common symptoms experienced by TBI survivors such as fatigue, poor concentration, depression and low exercise capacity. However, the association between hormonal deficits and disability remains uncertain. The primary objective of this pilot study is to assess the feasibility of a larger study that will evaluate the impact of pituitary disorders on neurological disability and functional recovery. The results of this study will provide key findings in the impact of pituitary disorders following TBI, which is a mandatory step prior testing the effect of hormonal replacement therapy in this population in costly clinical trials. If no relationship between pituitary disorders and disability is observed, the investigators' findings will prevent unnecessary, time-consuming and costly hormonal screening and will discourage potentially harmful hormonal therapy.
Title: Gallium (GA) -68-DOTATOC -PET (positron emission tomography) in the management of pituitary tumours Medical product: Ga-68-DOTATOC in PET/computer tomography (CT) Route of administration: Intravenously Diseases of interest: Pituitary tumours Aim: To study the detection of pituitary tumours with Ga-68-DOTATOC -PET (Ga-PET) and to correlate the tracer expression to somatostatin receptor (sst) occurrence Study design: Prospective non-randomised case-control study with open design with GA-PET before and after pituitary surgery in patients with pituitary tumours Study population: patients with acromegaly (n=10), Cushing's' disease of pituitary origin (n=10), TSH (thyreotropin) producing tumours (TSHomas) (n=5) and non-functioning pituitary adenomas (NFPA) (n=20) Number of patients: 45 Inclusion criteria: Adult man or woman (over 18 years) and naïve, unoperated pituitary tumour with growth hormone (GH) or adrenocorticotrophic hormone (ACTH)) or TSH production or NFPA without treatment with somatostatin analogues (SSA) or dopamine agonists. Exclusion criteria: Patient who may not attend to the protocol according to the investigators opinion. Pregnancy or lactating. Isolated prolactin producing tumours. Overproduction of gonadotropins. Carcinoids ie ectopic corticotrophin realising factor (CRF) production. Known or suspected allergy to the trial product or related products. Controls: Adult patients with Thyroid associated ophthalmopathy (TAO) before iv steroid infusion (part of another study see this protocol)- Study variables: Tumour detection, Tracer uptake as Standardised uptake value (SUV) max (SUVmax), SUV hotspot and SUV mean in regions of interests (ROIs) Time schedule: Recruitment of patients 2015-2017. Study termination 3 years later
Early detection and management of pituitary dysfunction reduces the morbidity that ensues as a consequence of missed or delayed diagnosis of this condition, and which may result in life-threatening events and increased mortality. The investigators study will explore the use of reflex strategies within the laboratory in capturing suspicious pituitary function test results from Primary Care patients and following these up with appropriate reflective testing. Subsequently patients identified from these results to have a possible underlying piuitary dysfunction will have an alert sent to their family physician prompting referral to the Endocrine team for further investigation and management.
The investigators are studying the utility of intra-operative magnetic resonance imaging (iMRI) during transsphenoidal pituitary surgery for large macroadenomas by randomizing patients to either an intra-operative MRI after resection, or no intra-operative MRI. The investigators will then count the number of gross total resection in each group of patients and also the complications related to surgery.
The purpose of this research study is to compare the extent of resection (EOR) in patients with nonfunctioning pituitary adenomas undergoing transsphenoidal surgery using a microsurgical technique to those patients who have undergone surgery with a fully endoscopic technique. Another goal is to compare surgical complications, endocrine outcomes, visual outcomes, length of surgery, length of hospital stay, and readmission rates between the two transsphenoidal surgery techniques. This is an observational data collection study with no experimental procedures or experimental medicines. Endonasal transsphenoidal removal of a pituitary tumor is a unique procedure and there is little information comparing the two surgical techniques.
A randomized, double-blind, placebo-controlled intervention trial involving 100 treated subjects undergoing endonasal trans-sphenoidal (ENTS) resection of pituitary lesion. Subjects will be randomized into two groups: 50 treated in the opioid-sparing arm and 50 treated in the standard post-operative medication arm.
Due to lack of hormone overproduction in non-functioning pituitary adenomas (NFPAs), only the symptomatic adenomas or large adenomas with proven growth and risk for symptoms in near future will undergo pituitary surgery. The remaining adenomas are monitored regularly. Operation of these large adenomas will rarely remove all tumour tissue, and there is also a risk of worsening of pituitary function. Often, adenomas with the highest growth potential are operated several times and some also need radiation therapy, providing additional risk for pituitary failure. Unlike some of the hormone-producing adenomas, there is no established pharmacological treatment for NFPAs. However, there are a few non-randomized studies suggesting that treatment with dopamine agonists may slow growth, and also induce tumour shrinkage. At present, cabergoline is the dopamine agonist most widely used in the treatment of pituitary adenomas secreting prolactin. Aim is to study the effect of medical treatment with cabergoline in non-functioning pituitary adenomas on the change in tumour volume.
During transsphenoidal resection of pituitary tumors and cysts, surgery is performed by a neurosurgeon and ear nose and throat surgeon. The pituitary tumor or cyst is reached by making a small hole in the back of the nose into the bottom of the skull. The surgeon is able to see the pituitary and tumor with an endoscope and remove the tumor through the hole. Surgery on the pituitary can cause disruption in the secretion of ACTH and cause adrenal failure (lack of cortisol secretion) which can cause nausea, vomiting, low blood pressure, and rarely can be fatal. There is no consensus among endocrinologists and neurosurgeons about the use of perioperative steroids in pituitary patients. Traditionally, all patients undergoing pituitary surgery were given steroids before, during, and after surgery because of the assumption that there would be some compromise in the amount of ACTH released by the pituitary as a result of surgical trauma. Studies have failed to show, however, that ACTH secretion is in fact compromised during transsphenoidal pituitary microsurgery. As a result, there are some centers that routinely give perioperative steroids to all patients undergoing pituitary surgery and there are some centers that do not routinely give perioperative steroids. There are several retrospective and prospective studies that have addressed this issue and have shown that withholding perioperative steroids is safe, but there has never been a prospective study comparing the two approaches. Objectives: The goal of this study is to prospectively compare two approaches to the perioperative management of patients undergoing transsphenoidal resection of a pituitary tumor or cyst. One protocol includes the routine use of perioperative steroids and the other does not. The investigators hypothesis, based on previous studies, is that patients who are adrenally sufficient do not routinely need to be treated with perioperative steroids. The investigators also hypothesize that the use of perioperative steroids may be associated with a higher rate of adverse outcomes
The degree of suppression and subsequent activation of the hypothalamic-pituitary-ovarian axis during the hormone-free interval in combined oral contraceptive (COC) hormone users varies depending on the dose of ethinyl estradiol in the formulation. This variation in activation may be associated with different side effects during the hormone free interval. Progesterone (P) remained suppressed during all 6 COC regimens (<1.8 ng/mL), which indicates continuous contraceptive efficacy during the 7-day hormone free interval of all formulations studied.