Testicular retraction is a condition in which a testicle descends normally into the scrotum, but can be pulled up with an involuntary muscle contraction into the groin. This condition is different from undescended testicles, which occurs when one or both of the testicles have not lowered into the scrotum permanently.

If the testicles don’t drop into the scrotum, they may not function normally and produce healthy sperm. This can lead to infertility later in life. Males born with undescended testicles also have a higher risk of testicular cancer in adulthood.