Title: 1301: Hepatofugal Portal Flow on Doppler Sonography in Patients with Various Hepatic Diseases
Abstract: Hepatofugal portal flow develops under various conditions due to the absence of valves in the portal vein. This finding can be appreciated on color and spectral Doppler sonography in patients with 1) diffuse liver diseases, 2) focal hepatic tumors, or 3) hepatic trauma or iatrogenic injury. Pathophysiologically, hepatofugal portal flow is attributed to arterioportal shunt. Nontraumatic arterioportal shunt can be classified into the following types: transsinusoidal, transvasal, transplexal and transtumoral. Penetrating injury may result in arterioportal fistula causing shunt. In this article, we illustrate Doppler sonographic demonstration of hepatofugal portal flow and associated radiologic findings in various hepatic diseases, with brief discussion of the mechanism as well as the clinical significance in each condition.