According to Biography.com, Lance Armstrong was diagnosed in October 1996 with testicular cancer. By the time the doctors discovered the athlete's cancer, it had already spread to his lungs, abdomen and lymph nodes. Initially, doctors gave Amstrong a 65 to 85 percent chance of survival.
Wikipedia notes that when Armstrong was diagnosed with his stage three cancer, he was experiencing symptoms that included a swollen testicle and coughing up blood. Biography.com explains that doctors reduced Armstrong's odds of survival to 40 percent when they discovered tumors on his brain.
To combat the disease, Armstrong had the brain tumors removed, had one testicle removed and underwent chemotherapy, according to Biography.com. The retired cyclist was declared cancer-free as of February 1997.