<prompt> Most common site of colorectal malignancy?CaecumSplenic flexureSigmoid colonRectum  <response>: Rectum38 is the most common site of colorectal carcinoma followed by sigmoid colon21 and by caecum12.Transverse colon -5.5; Ascending colon- 5; Descending colon- 4; Splenic flexure -3; Hepatic flexure -2; Appendix- 0.5. Reference : page 1179 Bailey and Loves sho practice of surgery 25th edition 