title: Clinically occult Leydig cell tumor presenting with gynecomastia.
abstract: An occult Leydig cell tumor is described in a patient who presented with gynecomastia. Diagnosis was established by means of testicular ultrasonography and selective testicular venous sampling. The pathophysiology and management of this rare disease entity are discussed.
authors: Urologic Oncology Section, National Cancer Institute, Bethesda, Maryland.
authors: G P
authors: GP
authors: Haas
authors: S
authors: S
authors: Pittaluga
authors: L
authors: L
authors: Gomella
authors: W D
authors: WD
authors: Travis
authors: R J
authors: RJ
authors: Sherins
authors: J L
authors: JL
authors: Doppman
authors: W M
authors: WM
authors: Linehan
authors: C
authors: C
authors: Robertson
mesh_terms: D000328:Adult; D006177:Gynecomastia / Q000209:etiology*; D006801:Humans; D007890:Leiomyosarcoma / Q000601:surgery; D007984:Leydig Cell Tumor / Q000150:complications* / Q000175:diagnosis / Q000473:pathology; D008297:Male; D009378:Neoplasms, Multiple Primary; D013736:Testicular Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000473:pathology; D013899:Thoracic Neoplasms / Q000601:surgery