title: Triorchidism.
abstract: Triorchidism is a rare congenital abnormality in which there are three testes. Approximately 70 cases have been reported in which histological examination has confirmed the diagnosis. This is a report of a further case of triorchidism in a 12-year-old boy. Some interesting features of previous cases are summarized, and the possible anatomical variations of testes, epididymis and vas are outlined.
mesh_terms: D002648:Child; D006801:Humans; D008297:Male; D013733:Testicular Diseases / Q000151:congenital* / Q000473:pathology / Q000601:surgery; D013737:Testis / Q000002:abnormalities* / Q000473:pathology / Q000601:surgery