Pediatric Urology
July 2, 2026
5 min read

Undescended Testicle (Cryptorchidism) in Children and Surgery Timing

Op. Dr. Fettah Tosun

Op. Dr. Fettah Tosun

Üroloji Uzmanı

An undescended testicle (cryptorchidism) is a condition in baby boys where the testicles, which develop inside the abdomen during pregnancy, do not descend into their normal position in the scrotum after birth. It is one of the most common urological anomalies in newborns.

What Are the Harms of Undescended Testicle?

For the testicles to perform normal reproductive functions, they must reside in the scrotum, which is 1-2 degrees cooler than body temperature. Testicles that remain in warm environments like the abdomen suffer damage in sperm-producing cells over time.

Why Treat and What is the Ideal Surgery Timing?

  • Infertility Risk: In untreated cases of bilateral undescended testicles, the risk of future infertility is very high.
  • Cancer Risk: Testicles remaining in the abdomen have a higher risk of developing cancer compared to descended testicles.
  • Surgery Timing (6-12 Months): Testicles may descend spontaneously in the first 6 months. If they have not descended by month 6, they should be brought down surgically (orchiopexy) by age 1 at the latest.
  • In pediatric urology, undescended testicle operations performed at an early age are vital for protecting the child's future reproductive and sexual health.

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