Figure 1. Contrast-enhanced abdominal computed tomography findings associated with the patient’s first episode of abdominal pain. (A) Low-density areas with air density in the portal veins can be observed in the left hepatic lobe and peripheral portion of the right anterior lobe (arrowheads). (B) Low-density areas in the intestinal wall exhibit bubble-like formations (arrows). (C) An enlarged view of a portion of Figure B (arrows) shows the bubble-like appearance in greater detail.