The syndrome of familial isolated pituitary adenomas (FIPA) or predisposition to pituitary adenomas (PAP) is characterized by the presence within the same family of at least two isolated pituitary adenomas without any other type of associated endocrine tumor. These pituitary tumors may present as homogenous with the same tumor phenotype or heterogeneous with different patterns of pituitary tumor phenotypes (GH, Prolactine, ACTH secretion or non-functioning pituitary adenomas) within the same kindred. Patients with FIPA are significantly younger at diagnosis and have significantly larger pituitary adenomas than matched sporadic pituitary adenoma counterparts. We report the case of a prolactinoma attached to the pituitary stalk as part of FIPA, revealed by erectile dysfunction.
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