title: The undescended testicle.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003456:Cryptorchidism / Q000601:surgery; D005298:Fertility; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011584:Psychology; D013736:Testicular Neoplasms / Q000517:prevention & control; D013737:Testis / Q000254:growth & development