PMC4899985_01
64-year-old male with iatrogenic arterioportal fistula. T2-weighted, fat-saturated image (A) demonstrates increased T2 signal (white arrow) within the posterior right lobe of the liver. This region demonstrates decreased signal on in-phase (B) and opposed-phase (C) imaging. No change in signal was noted between in- or opposed-phase imaging.
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T2 signal in the region of the biopsy (Fig. 1A). This region demonstrated decreased signal on both in- and opposed-phase imaging (Figs. 1B, 1C).
64-year-old male with iatrogenic arterioportal fistula. Axial postcontrast THRIVE sequences. Arterial phase imaging (A, B) demonstrates opacification of the posterior branch of the right portal vein (black arrow). Portal-venous imaging (C, D) demonstrates good opacification of the main (white arrow) and left portal veins.
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T1, fat-saturated, 3D-gradient, arterial-phase imaging demonstrated contrast opacification of the anterior branch of the right portal vein at the same time as the right hepatic artery (Figs. 2A, 2B). The main and left portal veins did opacify as expected in the portal phase of imaging (Figs. 2C, 2D).
64-year-old male with iatrogenic arterioportal fistula. Axial postcontrast THRIVE sequences. Arterial phase imaging (A, B) demonstrates opacification of the right hepatic artery without filling of the posterior branch of the right portal vein (white arrow). Portal-venous imaging (C, D) demonstrates multiple collaterals without a clearly identifiable main portal vein (black arrow).
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The prominent early filling of the anterior branch of the right portal vein seen on the previous MRI examination was no longer present, indicating that the arterioportal fistula had resolved (Fig. 3).