How to determine whether colon swelling is cancer

Colonic bulge can be biopsy, under the colonoscopy to take tissue made pathological sections, sent to the laboratory for microscopic examination. Biopsy is the gold standard for the diagnosis of cancer, can obtain pathological diagnosis. If it is clear colon cancer, can further do ct, magnetic resonance imaging, positron emission tomography, barium meal x-ray examination, can help clear the stage, develop treatment options, assess the prognosis. Rectal cancer is mainly treated by surgery. In the middle and late stages, radiotherapy, chemotherapy and targeted drug therapy can be combined to improve the curative effect.