<unk> s are tumors that occur in the pituitary gland and account for about 10% of intracranial neoplasms.<unk> s are often remain undiagnosed. Small<unk>  are found in 6 to 24 percent of adults at autopsy.<unk> s arise within the anterior lobe (adenohypophysis) of the gland.<unk> s may be classified according to the size of the adenoma and type of hormone secretion.<unk> s subtypes include corticotrophic, somatotrophic, thyrotrophic, gonadotrophic, and lactrotrophic adenomas. Adenomas less than 10mm are called microadenomas. There are no established causes for<unk> . Patients with<unk>  may progress to develop lethargy, headache, nausea, and vomiting. Common complications of<unk>  include bitemporal hemianopia, anosmia, acromegaly, gigantism, and Cushing's syndrome.
Prognosis is generally good, and approximately 18% of patients with macroadenoma require further treatment. Pharmacologic medical therapy is recommended among patients with prolactinoma, thyrotrophic, somatotrophic, and adrenocorticotropic adenomas.
The transsphenoidal microsurgical approach is the mainstay of treatment for growth hormone-(GH) producing adenomas, adrenocorticotropic hormone-(ACTH) producing adenomas, and macroadenomas.
Pituitary adenoma
Pituitary tumor
Hypothalamic hamartoma
Metanephric adenoma
Thyroid adenoma
Adrenal myelolipoma
Parathyroid adenoma
Pineal gland tumor