Radiologic features of thrombosis at diagnosis and follow-up of a 45-year-old woman with PNH. (A) Axial postcontrast VIBE MRI of a 45-year-old woman demonstrates heterogeneous enhancement of the liver. There is bland thrombus in 3 hepatic veins (thin arrows) and decreased IVC caliber without discrete thrombus (thick arrow). (B) After treatment, axial postcontrast VIBE image demonstrates significantly decreased thrombus burden from the prior (thin arrows) with persistent thrombus within middle hepatic vein (dashed arrow). The star indicates an incidental cyst in the liver periphery.