title: Synchronous bilateral testicular germ cell tumors of different histologic type. Pathogenetic and practical implications of bilaterality in testicular germ cell tumors.
abstract: Patients with a germ cell tumor (GCT) in one testicle are prone to develop cancer in the contralateral testicle. Metachronous development of a GCT in the remaining testicle occurs in 3% of patients. The synchronous development of bilateral GCT occurs in 0.5% of patients. Bilateral testicular neoplasms are almost always identical histologically. Only five cases of synchronous bilateral GCT of different histologic types have been reported in the literature. The authors report the sixth case of this uncommon phenomenon and discuss its clinical and pathogenetic implications.
authors.affiliation: Urology Section, Department of Veterans Affairs Medical Center, Minneapolis, MN 55417.
authors.forename: Y
authors.initials: Y
authors.lastname: Reinberg
authors.forename: J C
authors.initials: JC
authors.lastname: Manivel
authors.forename: G
authors.initials: G
authors.lastname: Zhang
authors.forename: P K
authors.initials: PK
authors.lastname: Reddy
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D009373:Neoplasms, Germ Cell and Embryonal / Q000209:etiology / Q000235:genetics / Q000473:pathology*; D016609:Neoplasms, Second Primary; D013736:Testicular Neoplasms / Q000209:etiology / Q000235:genetics / Q000473:pathology*