From the case:
Cavernous transformation of portal vein
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Axial C+ arterial phase

The portal vein cannot be identified, with the portal vein bed containing a cluster of serpiginously enhancing vessels extending into the liver.
From the case:
Cavernous transformation of portal vein

The portal vein cannot be identified, with the portal vein bed containing a cluster of serpiginous vessels extending into the liver.
Case Discussion
Findings are consistent with cavernous transformation in a patient with previous thrombosis of the portal vein.
Case courtesy of Bob Cook, MD. Western Memorial Regional Hospital Corner Brook, Newfoundland.