<prompt> Most common site of CA colon is -Rectosigmoid RegionAscending ColonDescending ColonTransverse Colon  <response>: Ans. is a i.e., Rectosigmoid Region o The most common site for carcinoma colon is rectosigmoid.SITEFREQUENCYRECTUM38SIGMOID COLON21CAECUM12TRANSVERSE COLON5.5DESCENDING COLON4SPLENIC FLEXURE3ASCENDING COLON5 