What is Undescended Testis
The testis is responsible for sperm production in men. The general body temperature is 36.9°C. But sperm production is best at a temperature 2°C less than this level. This is the reason why the testes are located outside the body.
When the baby is formed in the womb, the testis is initially formed inside the baby’s belly. As the fetus (baby in the womb) grows, the testes gradually descend out of the body and reach the sac (scrotum). When this does not happen, or is arrested half way, the result is ‘Undescended Testis’(UDT).
Undescended Testis is seen in 30% of boys born before date (preterm). In such cases it is very likely that testis can descend by itself in 3-6 months time. Among full term boys 1-3% are found to have Undescended Testis. They also have a small chance to correct this problem by themselves. But this possibility becomes much less after 6 months of age, after this age surgery is required to correct it.