In 1990, Bufill [1] was the first to describe colorectal cancer (CRC)based on its anatomical site of occurrence. Right-sided colon cancer(RCC) is derived from the embryologic midgut, including theproximal two-thirds of the transverse colon, the ascending colon,and the cecum. Left-sided colon cancer (LCC) arises from the embryologichindgut, including the distal third of the transverse colon,the splenic flexure, the descending colon, the sigmoid colon,and the rectum [2].
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