We report a case of reversed rotation (RR) of the midgut, the rarest form of intestinal malrotation (IMR), revealed by a chronic volvulus, in a 42-year-old woman presenting with episodes of abdominal pain occurring after heavy meals. The complete preoperative diagnosis was obtained by contrast-enhanced computed tomography (CT). Classical signs of volvulus were associated with typical findings of RR comprising an unusual position of the third duodenum in front of the mesenteric vessels and a very unusual location of the transverse colon behind these vessels. Complete absence of fixation of the right colon allowed secondary volvulus. A detailed reminder of the embryology of IMR and RR is presented.
Keywords: Intestinal malrotation; Midgut development; Midgut volvulus; Reversed rotation of midgut.
© 2021. The Author(s), under exclusive licence to Springer-Verlag France SAS part of Springer Nature.