Caecal volvulus in an adult with an incomplete common mesentery: A case report

A common mesentery is defined by the persistence of an embryonic anatomical arrangement secondary to an anomaly of rotation of the primary umbilical loop. Caecal volvulus is a rare cause of intestinal obstruction, which account for 1 to 1.5 % of all intestinal obstructions. A combination of both, intestinal mal rotation and caecal volvulus is rare.

We report this rare entity in a 50 year old male with no history of abdominal surgery who was admitted for an acute intestinal obstruction. Clinical examination found a non-complicated right inguinal hernia. Radiological assessment showed signs of an incomplete common mesentery and an important small bowl distention with a transitional zone near the profound inguinal ring. Emergency surgery was performed. Surgical exploration didn't find signs of strangulation in the inguinal hernia which motivated midline laparotomy. We discovered a caecal volvulus with an incomplete common mesentery and ischemic lesions in the caecum. Ileocaecal resection was performed with ileocolostomy.

Common mesentery can be complete or incomplete. It is often well tolerated in adulthood. This intestinal malrotation can sometimes cause serious complications such as volvulus. Their association is rare. Radiology can be very helpful in leading to the diagnosis, but the diagnostic process should not delay surgical intervention which is the basis of the treatment.

Caecal volvulus is a serious complication of intestinal malrotation. This association is rare in adulthood and symptoms are not specific. Emergency surgery is necessary.