title: A malignant Leydig cell tumor of the testis.
abstract: A 40-year-old man was referred to our hospital with gynecomastia and painless swelling of the right scrotum. Ultrasonography revealed a 15 x 10 mm mass with low echogenicity of the right testis. We performed right high orchiectomy. Histologically, Reinke's crystals and capsular invasion by tumor cells were found. Final diagnosis, the tumor was a malignant Leydig cell tumor of the testis.
authors.affiliation: Department of Urology, School of Medicine, Kinki University, 2-377 Ohnohigashi, 589-8511, Osakasayama, Osaka, Japan. urology@med.kindai.ac.jp
authors.forename: Koichi
authors.initials: K
authors.lastname: Sugimoto
authors.forename: Seiji
authors.initials: S
authors.lastname: Matsumoto
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Nose
authors.forename: Takashi
authors.initials: T
authors.lastname: Kurita
authors.forename: Hirotsugu
authors.initials: H
authors.lastname: Uemura
authors.forename: Young-Chol
authors.initials: YC
authors.lastname: Park
authors.forename: June
authors.initials: J
authors.lastname: Hanai
mesh_terms: D000328:Adult; D006177:Gynecomastia / Q000209:etiology; D006801:Humans; D007984:Leydig Cell Tumor / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D008297:Male; D009919:Orchiectomy; D012611:Scrotum / Q000473:pathology; D013736:Testicular Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D014463:Ultrasonography