title: A rare case of diabetic mastopathy in a Japanese man with type 2 diabetes mellitus.
abstract: We report a case of diabetic mastopathy in a man with type 2 diabetes. The patient was a 62-year-old man who had been diagnosed with type 2 diabetes at the age of 46 years. He had been treated with oral hypoglycemic agents. He noticed a mass in his left breast in February 2007, when HbA(1)c was 7.6% with the treatment using oral hypoglycemic agents, including acarbose, glimepiride, buformine, and pioglitazone. Mammography of the breast showed increased density, and ultrasonography showed a regular-shaped hypoechoic mass. Core needle biopsy was performed, and diabetic mastopathy was confirmed pathologically. Diabetic mastopathy usually occurs in women with type 1 diabetes. This case, a man with type 2 diabetes, is very rare.
authors.affiliation: Department of Endocrinology and Metabolism, Tonami General Hospital, Toyama. akahori0606@hotmail.com
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Akahori
authors.forename: Mami
authors.initials: M
authors.lastname: Kaneko
authors.forename: Kaoru
authors.initials: K
authors.lastname: Kiyohara
authors.forename: Shintarou
authors.initials: S
authors.lastname: Terahata
authors.forename: Tatsuho
authors.initials: T
authors.lastname: Sugimoto
mesh_terms: D003924:Diabetes Mellitus, Type 2 / Q000150:complications / Q000175:diagnosis*; D005348:Fibrocystic Breast Disease / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D035583:Rare Diseases / Q000175:diagnosis* / Q000209:etiology