Septic portal vein thrombophlebitis: computed tomography appearance. Case report.

An unusual case of superinfected thrombosis of the portal and superior mesenteric veins is presented. Thrombus and gas within the portal system were accurately detected by CT. A necrotic segment of distal small bowel was believed to be responsible for the findings. Prompt recognition of this rare entity and rapid initiation of adequate therapy may aid in improving the outcome of this usually fatal condition.