Possible signs of testicular cancer include swelling or discomfort in the scrotum.

These and other symptoms may be caused by testicular cancer. Other conditions may cause the same symptoms. A doctor should be consulted if any of the following problems occur:
 

• A painless lump or swelling in either testicle.
• A change in how the testicle feels.
• A dull ache in the lower abdomen or the groin.
• A sudden build-up of fluid in the scrotum.
• Pain or discomfort in a testicle or in the scrotum.