1. Perineal lipoma and accessory scrotum;Benchekroun;Prog. Urol.,1999
2. Perineal ectopic testis. Report of seven cases;Campobasso;Minerva Pediatr.,1993
3. Perineal ectopic testis;Dieckmann;Urologe [A],1988
4. Preoperative ultrasonography of the undescended testis;Kullendorff;Scand. J. Urol. Nephrol.,1985
5. A case of an ectopic testis in the perineum;Maidenberg;Prog. Urol.,1993