TY - CHAP M1 - Book, Section TI - Colonic Volvulus A1 - Papageorge, Christina M. A1 - Foley, Eugene F. A2 - Zinner, Michael J. A2 - Ashley, Stanley W. A2 - Hines, O. Joe PY - 2019 T2 - Maingot's Abdominal Operations, 13e AB - Colonic volvulus refers to the twisting of the colon around its mesenteric axis. Although an uncommon cause of large bowel obstruction in the United States, it is a potentially life-threatening condition that necessitates expedient surgical evaluation and treatment. The twisting of the colon results in a closed-loop obstruction, occlusion of the mesenteric vessels, and subsequent ischemia of the affected segment of bowel. Volvulus can affect any part of the bowel, and is classified based on the segment of colon involved. Given its redundancy and relatively long, narrowly-based mesentery, the sigmoid colon is the most common site of colonic volvulus, followed in frequency by the cecum. Other much rarer forms of colonic volvulus include cecal bascule, transverse colonic volvulus, ileosigmoid knotting, and splenic flexure volvulus. Sigmoid volvulus accounts for up to 80% of all colonic volvuli, while the cecum appears to be involved in approximately 20% of cases.1,2 SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accesssurgery.mhmedical.com/content.aspx?aid=1160042033 ER -