title: [Three patients with gynaecomastia].
abstract: In three patients gynaecomastia was diagnosed: a 22-year-old man with concomitant thyrotoxicosis due to an extensively metastasized extragonadal choriocarcinoma, a 53-year-old man with hypogonadism due to Klinefelter's syndrome that was biochemically obscured due to medications leading to elevated prolactin levels, and a 62-year-old man with acromegaly and secondary hypogonadism due to a mixed prolactin and growth hormone secreting pituitary adenoma. Gynaecomastia calls for thorough evaluation.
authors.affiliation: Afd. Interne Geneeskunde, Diakonessenhuis Utrecht, Bosboomstraat 1, 3582 KE Utrecht.
authors.forename: M
authors.initials: M
authors.lastname: Walraven
authors.forename: H J
authors.initials: HJ
authors.lastname: Wilmink
authors.forename: L M
authors.initials: LM
authors.lastname: de Boer
authors.forename: A F
authors.initials: AF
authors.lastname: Muller
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006177:Gynecomastia / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D006966:Hyperprolactinemia / Q000209:etiology*; D007006:Hypogonadism / Q000150:complications; D007713:Klinefelter Syndrome / Q000150:complications; D008297:Male; D008875:Middle Aged; D010911:Pituitary Neoplasms / Q000150:complications; D011388:Prolactin / Q000378:metabolism*; D015175:Prolactinoma / Q000150:complications; D013971:Thyrotoxicosis / Q000150:complications
chemical_list: D011388:Prolactin