Undescended testis means one or both testicles never made it into the scrotum. The condition is spotted at birth and follows a clear visual pattern.

Empty sac is the first clue. One side of the scrotum looks smaller or feels flat and soft, like an empty change purse.

Groin lump may show up. The testicle can sit in the inguinal canal, felt as a small, movable pea above the scrotum.

No pain is typical. The baby acts normally; the only sign is the missing ball.

Swelling or hernia bulge can appear alongside the undescended testis, making the groin look puffy during crying or straining.

If both testes are missing, the scrotum is flat and tight, and parents notice “no wrinkle” or “too smooth” skin.

Late signs include pain, swelling, or infertility if the testis stays hidden beyond the first year—an alarm that it needs to be brought down or removed.