Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40792-022-01409-6/MediaObjects/40792_2022_1409_Fig2_HTML.jpg)
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