title: Leydig cell tumor of the testis. Four new cases.
mesh_terms: D000328:Adult; D004958:Estradiol / Q000097:blood; D006801:Humans; D007984:Leydig Cell Tumor / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008297:Male; D013736:Testicular Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D013739:Testosterone / Q000097:blood; D014463:Ultrasonography
chemical_list: D013739:Testosterone; D004958:Estradiol