[Rare case of intestinal malrotation: duodenal-jejunal stenosis caused by ileal hyperrotation (180 degrees) in a newborn (author's transl)].

The authors present a case of intestinal malrotation characterized by a hyperotation of ileal loops (180 degrees) causing a stenosis of the duodenal-jejunal junction. Some ileal loops were situated, through a defect of the ascendent mesocolon, behind the ascendent colon. The difference between the ileal volvulus and this malformation is: 1. There was no vascular sufference of hyperrotated ileum. 2. The ileal loops were fixed in that hyperrotated position. 3. Some loops were located behind the colon ascendent. 4. After the derotation of ileal loops the stenosis at the duodenal-jejunal level persisted and we proceded to surgery of the stenotic point.