Additional CT-based WSC challenge in a 46-year-old male presenting with abdominal pain. (a) Presentation CT, including i.v. and oral contrast, demonstrates suspected diverticulitis in the left abdomen. Adjacent dilated proximal small bowel was favored to be reactive ileus. (b) Follow-up abdominal radiograph, obtained 24 h later, demonstrates complete transit of oral contrast into the colon and confirms small bowel patency. WSC, water-soluble contrast.