Colon

Cancer Colon cancer is a cancer of the colon, the large intestine. It is the third most commonly diagnosed cancer, and is the second-leading cause of cancer death in the United States. Colon cancer is potentially curable if found early. Screening tests such as colonoscopy can detect precancerous lesions and early-stage cancer and can reduce the risk of dying from the disease. Treatment options include surgery, chemotherapy, radiation, and targeted therapy. Diagnosing colon cancer early is the best way to improve outcomes and reduce the impact of this devastating disease.