Hello I don't know about undescended testes by birth but all the time it was in scrotum but sometimes testicles goes inside groin when it has cold temperature and in hot temp it comes back in bag or I need to bring them back without any pain. Is this mean i have undescended testicles? Does undescended testes happend in the middle of age if not by birth do i need to be worried of cancer? Sometimes I feel discomfort when my testes goes inside groin besides penis pl tell me whether is an undescended testes or normal