anorchism

Anorchism is a rare congenital defect characterized by the absence of one or both testes. This condition means an individual is born without testes or their testes have not descended. If only one testis is absent, the other typically remains within the abdomen rather than descending into the scrotum.12

Anorchism can be associated with other abnormalities of the spermatic tract. Undescended testes, also known as cryptorchidism, are more common and can increase the risk of injury, testicular cancer, and infertility if not treated. While anorchism itself refers to the complete absence of testes, it is a severe form of congenital abnormality within the male reproductive system.23