Sigmoid volvulus and descending colon adenocarcinoma, a double cause of intestinal obstruction: a case report.

Large bowel obstruction is caused by colorectal cancer, diverticular disease or volvulus. The latter is caused by rotation of the intestinal loop on its own mesenteric axis, and occurs in the sigmoid colon (80%) and in the cecum (15-20%) Its management includes devolution by colonoscopy or surgery. Malignant bowel obstruction is the initial presentation in 7-29% of colorectal cancer, and its optimal treatment is controversial. We describe a clinical case of a double obstructive lesion and its surgical approach, an unusual presentation that poses a diagnostic and medical-surgical management challenge.