Most boys who have
undescended testicles are otherwise healthy and do not
have other birth defects or medical conditions. However, sometimes undescended
testicles are associated with an
inguinal hernia.
Occasionally, undescended testicles are also associated with:
Males who have rare congenital conditions—including
cystic fibrosis, Kallman's syndrome,
Klinefelter syndrome, Noonan's syndrome (male Turner
syndrome), and Prader-Willi syndrome—are more likely than other males to have
undescended testicles.
Undescended testicles occur in baby boys who have abdominal wall
defects and prune belly syndrome. This syndrome is a condition in which
abdominal muscles and structures are missing and some organs, such as the
bladder and kidneys, develop abnormally.