For more detailed information, see Testicular Cancer. Symptoms of testicular cancer. You can’t be sure you have testicular cancer from just symptoms, so it’s important to see a health care provider about any testicular symptoms that concern you. Don’t wait. The most common symptom of testicular cancer is a painless lump on or in a testicle.
Cancer starts when cells begin to grow out of control. Cells in nearly any part of the body can become cancer and spread to other parts of the body. To learn more about how cancers start and spread, see What Is Cancer? Cancer that starts in the testicles is called testicular cancer.
6. A buildup of Fluid in the Scrotum. In some cases of testicular cancer, a collection of fluid known as hydrocele may form in the scrotum. A hydrocele is a buildup of clear fluids in the scrotum. It develops as a thin-walled sack but can be on one or both sides. Swelling and pain may be present, too.