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  2. Pituitary adenoma - Wikipedia

    en.wikipedia.org/wiki/Pituitary_adenoma

    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, with an estimated prevalence rate in the general population of approximately 17%. [ 1 ][ 2 ]

  3. Pituitary apoplexy - Wikipedia

    en.wikipedia.org/wiki/Pituitary_apoplexy

    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 ...

  4. Prolactinoma - Wikipedia

    en.wikipedia.org/wiki/Prolactinoma

    A prolactinoma is a tumor (adenoma) of the pituitary gland that produces the hormone prolactin. It is the most common type of functioning pituitary tumor. [1] Symptoms of prolactinoma are due to abnormally high levels of prolactin in the blood (hyperprolactinemia), or due to pressure of the tumor on surrounding brain tissue and/or the optic nerves.

  5. Hyperprolactinaemia - Wikipedia

    en.wikipedia.org/wiki/Hyperprolactinaemia

    A common cause for hyperprolactinemia is prolactinomas and other tumors arising near the pituitary. These adjacent tumors, such as those that cause acromegaly, can physically compress the pituitary stalk and block the flow of dopamine from the hypothalamus to the pituitary gland, causing prolactin levels to increase.

  6. Chiasmal syndrome - Wikipedia

    en.wikipedia.org/wiki/Chiasmal_syndrome

    birnlex_1416. Anatomical terms of neuroanatomy. [edit on Wikidata] Chiasmal syndrome is the set of signs and symptoms that are associated with lesions of the optic chiasm, manifesting as various impairments of the affected's visual field according to the location of the lesion along the optic nerve. Pituitary adenomas are the most common cause ...

  7. Craniopharyngioma - Wikipedia

    en.wikipedia.org/wiki/Craniopharyngioma

    A craniopharyngioma is a rare type of brain tumor derived from pituitary gland embryonic tissue [1] that occurs most commonly in children, but also affects adults. It may present at any age, even in the prenatal and neonatal periods, but peak incidence rates are childhood-onset at 5–14 years and adult-onset at 50–74 years. [2]