title: [Leydig cell tumor].
abstract: We report on a 54-year-old male patient with Leydig cell tumor of testis, an incidental finding following orchiectomy for a testicular tumor. The pathological findings met the established histologic criteria for a benign tumor. The patient required no other treatment. The results of hormonal analyses were hormonal. We discuss recently proposed histologic and hormonal criteria to distinguish the benign from the malignant form of this tumor type. The foregoing are useful in determining the therapeutic approach.
authors.forename: J A
authors.initials: JA
authors.lastname: Zabala Egurrola
authors.forename: C
authors.initials: C
authors.lastname: Pertusa Peña
authors.forename: J G
authors.initials: JG
authors.lastname: del Tanago
authors.forename: A
authors.initials: A
authors.lastname: Arruza Etxebarría
authors.forename: R
authors.initials: R
authors.lastname: Llarena Ibarguren
authors.forename: C
authors.initials: C
authors.lastname: Bernuy Malfaz
mesh_terms: D006801:Humans; D007984:Leydig Cell Tumor / Q000473:pathology* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D013736:Testicular Neoplasms / Q000473:pathology* / Q000503:physiopathology
vernacular_title: Tumor de células de Leydig.