Testicular Cancer


This cancer is most often found in males between the ages of 15 and 35. It can form in one or both testicles (also called the "testes"). These reproductive organs make sperm and sex hormones.


We don't understand what causes testicular cancer. In almost all cases, it starts in a testicle's sperm-making cells. We call these the "germ" cells. When the DNA of one of these cells is damaged, the cell grows and divides abnormally. This leads to a mass of cells we call a "tumor."


Testicular cancer usually affects only one testicle. If you have this cancer, you may feel a lump in your testicle. It may swell with fluid, and it may feel heavy. It may be painful. You may also have pain in your groin, abdomen or back. Your breasts may become enlarged, and they may be tender.


In most cases, testicular cancer is very treatable. You may have surgery to remove your testicle. You may need to have your nearby lymph nodes removed, too. You may also benefit from chemotherapy or radiation therapy. Your doctor will create a care plan that's right for you.