title: Unilaterally impalpable testis.
abstract: Thirty children presenting with a unilateral impalpable testis and a normally descended contralateral testis underwent surgical exploration. The testis was absent ('vanishing testis') in 12 cases (40%) and orchidectomy for a dysgenetic testis was performed in a further 5 cases. The overall rate of monorchism following surgery was therefore 56%. It is desirable that parents be advised of this possibility pre-operatively.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003456:Cryptorchidism / Q000601:surgery; D006059:Gonadal Dysgenesis / Q000601:surgery*; D006801:Humans; D008297:Male; D009919:Orchiectomy; D011446:Prospective Studies; D013737:Testis / Q000002:abnormalities* / Q000601:surgery