If undescended testicles are not treated, it can lead to fertility problems later in life. When the testicles are in the abdomen, they are warmer than needed. This can affect the quality of the sperm and decrease sperm production.
Another complication of an undescended testicle is an elevated risk of hernias. Hernias happen when an organ or tissue pushes through an opening in the surrounding muscle wall.
Hernias can be painful, and if they're not treated, they can cause serious health problems. Surgical intervention is the only way to fix a hernia. Undescended testicles can lead to tumor growth, as the testicles cannot properly regulate their temperature. Tumors are more likely to grow in warmer environments, so boys with undescended testicles need surgery as soon as possible.