Figure legend:
Figure. 1 (a) Contrast-enhanced computed tomography showing extensive hepatic portal venous gas (red arrows). (b) Barium retention in the ileum and colon (red arrows).
Authorship: All the authors made substantial contributions to the preparation of this manuscript and approved the final version for submission. TY and KT: drafted the manuscript; KT: corresponding author; AS and ST: clinical support; ST: careful review of the manuscript.