Fig. 2

Operative findings: a the long tubular duplication located beside the intestine (160 cm). The classifications in the relation to the mesenteric vessels are primarily type 1b, with some type 1c and type 2a. b The schema of the duplication and intestine. The duplication is adjacent to a 40- to 200-cm portion of the small intestine and connected at one end. c Wrenn procedure, in which the mucosa of the duplication was stripped. d The mucosa of type 1b and type 2a duplications were resected using the Wrenn procedure (mucosal stripping of the duplication) and the type 1c duplication was resected with the adjacent intestine (5 cm) and end-to-end anastomosis