Cryptorchidism is the absence of one or both testes from the scrotum. It is the most common birth defect of the male genital. About 3 % of full - term and 30 % of premature infant boys are born with at least one undescended testis. However, about 80 % of cryptorchid testes descend by the first year of life (the majority within three months), making the true incidence of cryptorchidism around 1 % overall. Cryptorchidism may develop after infancy, sometimes as late as young adulthood, but that is exceptional.
a condition in which there is a lack of one or both testes
Cryptorchidism cryptorchidism Cryptorchidism