There is no longer doubt that an increased risk for colon cancer exists in patients with ulcerative colitis. This conclusion is supported not only for cancer of the colon, but for the small bowel and the colon in Crohn's disease. This review covers new data and new ideas about risk factors, the latest observations on dysplasia as a premalignant lesion, recommendations for endoscopic surveillance, and management of the patient with potential cancer based on the outcome of surveillance.
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