Cavernous transformation of the right portal vein branch
Patient with known thrombosis of the right intrahepatic portal vein branch, referred for MRI of the liver to rule out hepatocellular carcinoma.
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Fig. 2Thin-slab MIP of the same 3D gradient echo sequence as in Fig. 1, encompassing the portal venous system.
The right portal vein branch is filled by an organised thrombus with only minimal re-canalisation and surrounded by multiple small tortuous vessels (Fig. 1). On MRA (Fig. 2), the right portal branch is not visualised.