neurologic disorders
Pituitary Tumors
Key Points
Most pituitary tumors are adenomas, which may be secretory or nonsecretory. Secretory adenomas may cause diabetes insipidus, galactorrhea, Cushing syndrome, or gigantism or acromegaly. Any pituitary tumor may compress optic nerve tracts, causing bitemporal hemianopia, unilateral optic atrophy, or contralateral hemianopia, or it may compress pituitary tissue, causing a deficiency of pituitary hormones. Excise tumors and treat endocrinopathies; adenomas that produce prolactin may require only treatment with dopaminergic agonists. 