Adenoma

A benign growth of cells arising from glandular tissue. All pituitary adenomas are benign although approximately 1 in 1000 tumor of pituitary gland origin are a pituitary carcinoma (malignant). Despite their benign histology, pituitary adenomas can still cause serious health conditions including hormonal loss (hypopituitarism), hormonal excess (acromegaly, Cushing’s disease, prolactinoma) visual loss and headaches.