Fig. 2

Representative images after systemic steroid treatment. a The quantity of contrast medium that could flow into the duodenum slightly increased on post-steroid treatment day 1 (postoperative day 57). The yellow arrowhead indicates the contrast medium. b Although partial anastomotic stenosis could be observed, the quantity of contrast medium that flowed into the duodenum definitely increased on post-steroid treatment day 37 (Postoperative day 93). Yellow and red arrowheads indicate the contrast medium. c The swelling of the duodenum disappeared on post-steroid treatment day 121 (Postoperative day 177). d The edema in the remaining part of the stomach had reduced on post-steroid treatment day 121 (Postoperative day 177)