Testicular Cancer

As the most common cancer in American males between the ages of 15 and 35, testicular cancer is highly treatable. The urologists at Providence Saint John’s are leaders in the field and use a multi-disciplinary approach to diagnosing and treating testicular cancer. A team of surgeons, medical oncologists, radiation oncologists, pathologists, researchers and more assesses the individual needs of every patient. And we are home to a world-renowned urologist who is an expert in minimally invasive laparoscopic and robotic-assisted cancer surgery.

At the John Wayne Cancer Institute at Providence Saint John’s, we study cancer to perhaps one day prevent it altogether. Timothy G. Wilson, M.D., professor and chair of Urology at the institute, leads the charge in urology cancer research.

The Testicles

Testicles are part of the male reproductive system. These two organs are each normally a little smaller than a golf ball in adult men and are contained within a sac of skin called the scrotum. Their main functions are to make sperm and male hormones such as testosterone.

Testicular Cancer

The body’s cells grow, divide and make new cells in an orderly way. Cancer begins when cells start to grow out of control and form new cells that the body doesn’t need.

This overgrowth of abnormal cells can become a mass of tissue called a tumor.

More than 90 percent of cancers of the testicle develop in germ cells. These are the cells that make sperm. There are two main types of germ cell tumors:

  • Seminomas: These tumors tend to grow and spread more slowly than non-seminomas. More than 95 percent of seminomas occur in men between the ages of 25 and 45.
  • Non-seminomas: These types of germ cell tumors usually occur in men in their late teens and early 30s.