<P> Cryptorchidism is the absence of one or both testes from the scrotum . The word is from the Greek κρυπτός , kryptos , meaning hidden ὄρχις , orchis , meaning testicle . 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 . </P>
<P> Cryptorchidism is the absence of one or both testes from the scrotum . The word is from the Greek κρυπτός , kryptos , meaning hidden ὄρχις , orchis , meaning testicle . 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 . </P>
failure of the testes to descend into the scrotum at birth
failure of the testes to descend into the scrotum at birth
Cryptorchidism
Cryptorchidism