PMC7486419_01
1A-1D: Contrast-enhanced abdominal computed tomography images from the diagnostic workup of the presented patient. 1A-1B: thrombosis of the SMV demonstrated on coronal and axial views as a filling defect indicated by white arrowheads. 1C: "Halo sign'' of a small bowel loop demonstrated on sagittal view, representing stratification of the bowel wall by a central layer of edema, indicated by white arrowhead. 1D: marked bowel wall thickening and adjacent mesenteric fat stranding noted in the right lower quadrant, indicated by white arrowhead. Also noted by the interpreting radiologist was thrombosis of several distal SMV branches (not demonstrated here).
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Contrast-enhanced abdominal computed tomography (CT) revealed severe wall thickening involving multiple small bowel loops consistent with a severe segmental enteritis; thrombosis of the SMV to the portal-splenic confluence with further thrombosis of several more distal mesenteric venous branches; and perihepatic, perisplenic, and pelvic ascites (Fig. 1).