Fig. 2

Intraoperative findings. a A strangulated necrotic tubular structure was recognized to demonstrate torsion. Its root was continuous with the intestinal tract and was twisted. b, c Intestinal duplication was found along the normal intestinal tract. It shared a wall with the small intestine and ran in parallel for 15 cm, but its anal side showed a diverticulum-like form (arrow) and was twisted