Large bowel shows pancolic involvement without skip lesions. Diffuse mucosal hyperenhancement starting from the rectum to the cecum with submucosal edema and congested vasa recta. Multiple mucosal ulcerations are noted. Diffuse stranding of inframesocolic omentum.
Small bowel shows normal mucosal enhancement and mural thickness. Multiple reactive mesenteric lymph nodes. Minimal free pelvic ascites. No pneumoperitoneum.
Multiple venous thrombi are noted at the right hepatic vein and its tributaries with mosaic perfusion of the related hepatic segments. Small non-occlusive thrombi are noted at one of the tributaries of the inferior mesenteric vein, left lumbar veins and left common iliac veins.