Testicular cancer affects the tissues in one or both testicles.
While testicular cancer is relatively rare, it is the most common cancer in men 15 to 35 years old and the second most common form of cancer among men under 40. This is true even if surgery has been done to place the testicle in the appropriate place in the scrotum. Treatments are available for all testicular cancer patients and can cure most patients if detected early. Surgery is a common treatment for most stages of testicular cancer. One or both testicles may be removed, as well as some lymph nodes in the abdomen.