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Pituitary Gland Disorders, Usually an MRI scan of the pituitary gland is undertaken to look for pituitary abnormalities - eg, pituitary adenoma or cysts. , ...
Pituitary Tumours, Carcinomas account for 0.1% to 0.2% of all pituitary tumours. Prolactinoma is the most common pituitary adenoma in children. Non-functioning (non-secre...
Acute Pituitary Failure, The incidence of acute pituitary failure in pituitary adenomas is between 2% and 7%. Acute pituitary failure usually occurs in patients ...
These include the following: Pituitary adenoma - Cushing's disease A pituitary adenoma is a small, non-cancerous (benign) tumour in the pituitary gland.
This is a non-cancerous (benign) growth called a pituitary adenoma. The adenoma may grow up to 1-2 cm across. However, as it is benign, it does not spread to other parts of the body....
They are usually multiple, with up to 15 separate tumours. Pituitary adenomas Pituitary adenomas may be detected by screening in 30% of patients but are found at post-m...
In a very small minority of cases, cluster headaches seem to be triggered by a tumour in the pituitary gland (pituitary adenoma) or other brain tumours. (The pituitary is a ...
A baseline and stimulated ratio of IPS to peripheral ACTH of less than 1.8 is suggestive of ectopic ACTH, while a ratio of IPS to peripheral ACTH of greater than 2 is consistent with a pituitary a...
The causes of hypopituitarism include: Pituitary tumours : for example, adenomas. Non-pituitary tumours: craniopharyngiomas , meningiomas , gliomas , chordomas, epen...
Cushing's disease is the name given to a pituitary adenoma that secretes ACTH, also called a corticotrophinoma. Such patients have high levels of cortisol which suppress the productio...
Acromegaly causes (aetiology) Acromegaly is usually caused by oversecretion of growth hormone from a pituitary adenoma. [ 2 ] Rarely, ectopic GH from non-endocrine tumours - eg, lu...
Cushing's syndrome , including pituitary adenomas (Cushing's disease) and ectopic adrenocorticotropic hormone (ACTH) secretion (most often due to small cell carcinoma of the lung and ...
Macroadenomas: >10 mm. Giant pituitary adenomas: >40 mm. Malignant prolactinomas (very rare). Some pituitary tumours may occur as part of a clinical syndrome.
Tumours, such as pituitary adenoma , meningioma, giant cell tumour, metastases. Infection - eg, sinusitis , herpes zoster , tuberculosis , fungal.
A lesion at the optic chiasma, such as a pituitary adenoma, classically causes a bitemporal hemianopia (as decussating fibres are affected).
Other causes include exogenous thyroid hormone excess, drug-induced hyperthyroidism, TSH-secreting pituitary adenomas and pituitary resistance to thyroid hormones. Risk factors...
Tumours - ventricular, pineal tumours and tumours of the posterior fossa - eg, ependymoma, subependymal giant cell astrocytoma, choroid plexus papilloma, craniopharyngioma, pituitary adenoma,...
MRI scans may be useful to define the extent of bony disease as well as in the assessment of associated endocrine lesions - eg, pituitary adenoma. Radionuclide bone scans: helpful to defin...
Breast cancer is up to 50 times more frequent in this group. [ 7 ] Obesity. [ 8 ] Chronic liver conditions. Pituitary adenomas leading to hyperprolactinaemia (associated with bil...
Prolactin in case of pituitary adenoma. 24-hour urinary free cortisol for Cushing's syndrome. If isotretinoin is considered, baseline blood tests such as LFTs and fasting lipids are...