Reversed Bowel Rotation with Midgut Volvulus and Internal Hernia

Abstract

Congenital intestinal malrotation is a group of intestinal rotational anomalies occurring during embryogenesis. Reversed rotation is considered the rarest type of malrotation and often presents with symptoms of bowel obstruction. We present a rare case of a 27-year-old woman who presented with acute abdomen. The patient’s preoperative computed tomography (CT) scan and operative findings confirmed reverse malrotation, internal hernia of foramen of Winslow, and midgut volvulus. The transverse colon, duodenum, small bowel, cecum, and appendix were abnormally located, with the presence of Ladd bands. The patient underwent an emergency laparotomy (Ladd procedure) with an uneventful postoperative recovery and an unremarkable follow-up CT scan of the abdomen. A review of the literature for intestinal reverse malrotation is also presented to provide an understanding of the expected clinical picture and imaging findings for this rare anomaly.