Testicular cancer is a rare type of cancer that originates in the testicles, organs of the male reproductive system responsible for making sperm and male hormones. The cells of the testicles can develop into different types of testicular cancers. The most common origin of testicular cancer is in the cells known as germ cells. Approximately 1 out of every 250 men will be diagnosed with testicular cancer.
Testicular cancer commonly occurs in young and middle-aged men with the average age of diagnosis being at 33 years old. Treatment for testicular cancer is often successful and there is a very low risk of death from testicular cancer. There is a 99% five-year survival rate if the cancer has not spread to other areas outside of the testicles.