Colon

Cancer Colon cancer is a form of cancer that affects the large intestine (colon). It is one of the most common types of cancer in the United States and is one of the leading causes of death in men and women. The earliest signs and symptoms of colon cancer can include changes in bowel habits, such as constipation, diarrhea, or rectal bleeding, as well as unexplained weight loss and abdominal pain. To diagnose colon cancer, a physician may perform a physical exam, blood tests, and imaging tests such as an X-ray or CT scan. Treatment for colon cancer often involves surgery to remove the cancerous tumor and surrounding tissue, as well as chemotherapy and/or radiation therapy. In many cases, regular colonoscopies can help detect colon cancer in its early stages, which can improve the prognosis and increase the chances of successful treatment.