Fig. 1

a The arrows point to the locations of the three trocars. b The ascending colon penetrates from the left side of the mesentery to the rear, suggesting a clockwise volvulus. c When the colon is reduced, the transverse colon and ascending colon are fully exposed. d It is necessary to explore the jejunum from the ileum because part of the mesentery may have folded. e After complete reduction, the Ladd band was cut. f Cut the greater omentum from the transverse colon