Testicular descent can get arrested at any point from the renal hilum to the external inguinal ring.Of all the undescended testes, 90% to 95% are low and in the inguinal canal.

• 双睾丸下降过程中可于肾门至腹股沟外环的任一点受到阻止，所有的隐睾中，90%25-95%25的位置较低，位于腹股沟管内。