Prolactinoma is the most common type of pituitary adenoma. Prolactinoma may occur in approximately 30% of multiple endocrine neoplasia type 1 patients. It may also occur with Carney complex or McCune-Albright syndrome. Prolactinoma is also associated with various familial syndromes for example MEN1 syndrome. There have been familial cases of prolactinoma unrelated to MEN 1 syndrome as well. On gross pathology, prolactinoma is divided on the basis of size into microprolactinoma and macroprolactinoma. On  histological analysis, prolactinoma may be divided into sparsely granulated and densely granulated.
Prolactinoma pathophysiology
Prolactinoma risk factors
Pituitary adenoma pathophysiology
Hypophyseal hypertrophy in pregnancy
Germinoma pathophysiology
Struma ovarii pathophysiology
Prolactinoma epidemiology and demographics
Seminoma risk factors