The incidence of digestive malrotation is very frequent and represents about 1/500 births. Their incidence of discovery on imaging is 0.5%. Isolated malrotation of the colon is rarer than that of the small intestine alone or both in association. We report here a rare case of isolated malrotation of the colon following an anomaly of the position of the inferior mesenteric artery associated with a chronic intermittent small bowel obstruction. These abnormalities were discovered on Upper Gastrointestinal Imaging, opaque enema and ultrasonography, performed in the Radiology Department of the University Hospital Center Analankininina Toamasina Madagascar.