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Bitemporal hemianopsia. Bitemporal hemianopsia is the medical description of a type of partial blindness where vision is missing in the outer half of both the right and left visual field. It is usually associated with lesions of the optic chiasm, the area where the optic nerves from the right and left eyes cross near the pituitary gland.
Pituitary adenomas are tumors that occur in the pituitary gland. Most pituitary tumors are benign, approximately 35% are invasive and just 0.1% to 0.2% are carcinomas. [ 1] Pituitary adenomas represent from 10% to 25% of all intracranial neoplasms and the estimated prevalence rate in the general population is approximately 17%. [ 1][ 2]
Craniopharyngioma is a rare, usually suprasellar [ 15] neoplasm, which may be cystic, that develops from nests of epithelium derived from Rathke's pouch. [ 16][ 17] Rathke's pouch is an embryonic precursor of the anterior pituitary. [citation needed] Craniopharyngiomas are typically very slow-growing tumors.
Nelson's syndrome is a disorder that occurs in about one in four patients who have had both adrenal glands removed to treat Cushing's disease. [1] In patients with pre-existing adrenocorticotropic hormone ()-secreting pituitary adenomas, loss of adrenal feedback following bilateral adrenalectomy can trigger the rapid growth of the tumor, leading to visual symptoms (e.g. bitemporal hemianopsia ...
Pituitary apoplexy is bleeding into or impaired blood supply of the pituitary gland. This usually occurs in the presence of a tumor of the pituitary, although in 80% of cases this has not been diagnosed previously. The most common initial symptom is a sudden headache, often associated with a rapidly worsening visual field defect or double ...
Sufficiently low production of certain pituitary hormones can be fatal resulting in the failure of the thyroid or adrenal glands. [citation needed] Common symptoms include nausea, vomiting, fatigue, loss of libido, amenorrhea, and dizziness. [1] It is estimated that, typically, it takes from 12 to 40 years for autoimmune destruction to present ...
During menopause, your body and brain undergo some radical shifts that can contribute to the development of an eating disorder. New hormone fluctuations not only impact your sleep and mood, but ...
Oncology. Thyroid neoplasm is a neoplasm or tumor of the thyroid. It can be a benign tumor such as thyroid adenoma, [ 1] or it can be a malignant neoplasm ( thyroid cancer ), such as papillary, follicular, medullary or anaplastic thyroid cancer. [ 2] Most patients are 25 to 65 years of age when first diagnosed; women are more affected than men ...