Pituitary tumors are abnormal growths of cells in the tissue of the pituitary gland. The pituitary gland is a bean-shaped organ in the center of the brain, just behind and between the eyes. The pituitary gland causes the release of hormones in the body that control growth, metabolism, response to stress, and sexual and reproductive function.1
Doctors and scientists classify pituitary tumors according to whether or not they spread beyond the pituitary gland:2
Because pituitary carcinomas are so rare, this health topic will cover only those pituitary tumors that are adenomas.
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