Suppurative pylephlebitis and pylethrombosis: the role of anticoagulation.

Suppurative thrombophlebitis of the portal vein resulting from inflammatory intra-abdominal conditions is a rare complication that may result in pylethrombosis and portal hypertension. A case is presented with documented pylethrombosis caused by diverticulitis. Color flow Doppler scanning was used to establish the diagnosis. Systemic anticoagulation therapy was added to the antibiotic regimen because of postoperative propagation of the clot. Anticoagulation therapy prompted resolution of the episode. Long-term follow-up studies demonstrated recanalization of the portal vein. Anticoagulation should be instituted with documented acute pylethrombosis caused by inflammatory disease of the abdomen.