Young men are most at risk for testicular cancer. It is the most common cancer in men ages 20 to 34.
Whites have the greatest risk of testicular cancer. They are five to 10 times more likely to get testicular cancer than African Americans. After whites, Asian-Americans, Latinos, and Native Americans have the highest rates of testicular cancer.
Other risk factors include:
- Cryptorchidism (having a testicle that did not descend into the scrotum)
- Family history of testicular cancer
- Klinefelter's syndrome (a genetic condition that causes underdeveloped testicles and other problems)
- Having previously had testicular cancer