Procedure for Colon Segment Resection

Description

Oriented in anatomical position, the large intestine is rendered from cecum to rectum with the appendix projecting inferiorly from the cecal pole and the ascending colon coursing superiorly to the hepatic flexure. The transverse colon spans right to left before turning inferiorly at the splenic flexure into the descending colon, which continues to the sigmoid colon and then the rectum in the inferior midline. External surface anatomy is emphasized, with haustra separated by semilunar folds and the longitudinal taeniae coli implied by the segmental sacculation pattern. Mesenteric attachments are not featured, keeping attention on colonic segment relationships and continuity. Segmental colectomy hinges on choosing resection margins that respect vascular territories and lymphatic drainage, then restoring continuity with a tension-free anastomosis. This view supports teaching of how a right hemicolectomy differs from a sigmoid colectomy in terms of which named segments are removed and which flexures serve as operative landmarks, an orientation that becomes concrete when discussing cancer resections with high ligation of ileocolic, right colic, middle colic, or inferior mesenteric branches. Anastomotic leak risk tracks with perfusion and tension, so being clear about proximal and distal segment identity matters. Use this asset for general surgery and colorectal surgery lectures, bowel anatomy labs, and patient-facing procedure explainers that need a clean depiction of the colon’s gross morphology without distracting intraabdominal detail. It also fits textbook figures on colectomy types, operative planning diagrams, and board-style questions contrasting right, left, and sigmoid resections. Anatomical accuracy verified by SciePro's Medical Advisory Board.