Tests to help your doctor see if colorectal cancer has metastasized or recurred include: An abdominal ultrasound to find the cause of pain or swelling in your abdomen. A colonoscopy to see if cancer has returned to your intestine. Blood tests to find out
Some people who have metastatic or recurrent colorectal cancer do not have any symptoms. When they do appear, the most common symptoms are: A change in bowel habits, such as narrow stools or frequent diarrhea or constipation, blood in the stool or black,
Cancer is the growth of abnormal cells in the body. These extra cells grow together and form masses, lumps, or tumors. In colorectal cancer, these growths usually start as harmless (benign) polyps in the large intestine (colon or rectum).
Radiation therapy uses X-rays to destroy colorectal cancer cells. It is often combined with surgery or chemotherapy. Radiation therapy may also be used to reduce the cancer's size when it is blocking the colon or rectum or to relieve pain.