Cancer information / Cancer types / Colorectal / Colorectal cancer / Precancerous conditions

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American Cancer Society. (2018, February 21). Colorectal Cancer. Retrieved from:

American Society of Clinical Oncology. (2017, August). Colorectal Cancer. Retrieved from:

National Cancer Institute. (2018, June 7). Rectal Cancer Treatment (PDQ®) Health Professional Version. Retrieved from: