Uro-andrological glossary

Failure of one (unilateral cryptorchidism) or both testicles (bilateral cryptorchidism) to descend into the scrotum at birth present in approximately 3% of children. Apart from rare cases of endocrine or genetic etiology, the cause is in most cases unknown. It can be abdominal or inguinal. It constitutes a risk factor for infertility and testicular cancer.