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  • Title: Intrahepatic Arterioportal Fistula: A Rare Cause of Portal Hypertension After Deceased Donor Liver Transplant.
    Author: Roy A, Taneja S, Behera A, Kaman L, Kalra N, Chaluvashetty SB, Das A, Dahiya D, Duseja AK, Singh V.
    Journal: Exp Clin Transplant; 2020 Oct; 18(5):645-648. PubMed ID: 32778016.
    Abstract:
    A 43-year-old male patient, who received a deceased donor liver transplant for background ethanol-related decompensated cirrhosis, presented 7 months after transplant with mild abdominal distension and pain. On evaluation, the patient had thrombocytopenia, high serum-ascites albumin gradient ascites, and deranged liver functions. The Doppler study of the splenoportal axis showed hepatofugal flow in the recipient's portal vein, normal hepatic veins, a normal liver, splenomegaly, mild ascites, and multiple periportal collaterals. A transjugular liver biopsy and a hepatic venous pressure gradient measurement were done, which suggested mild portal tract inflammation with portal tract fibrosis with prominent portal venous thickening and normal hepatic venous pressure gradient (4 mm). However, the patient had a progressive increase in ascites and a dramatic increase in serum bilirubin level. A triple-phase computed tomography was done that showed rapid contrast flow in both the portal and hepatic arterial phase, suggesting arterialization of the portal flow with possible suspicion of a communicating arterioportal fistula. The patient underwent digital subtraction angiography, which was followed by an embolization of the arterioportal fistula. After embolization, serum bilirubin gradually decreased and ascites resolved. A repeat Doppler of the portal venous system showed established hepatopetal flow with progressively rising portal flow velocities.
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