PVT, portal vein thrombosis; OR, odds ratio. Figure 1. CT scan of acute portal vein thrombosis (PVT) in a 56-year-old female with non-alcoholic steatohepatitis (NASH) cirrhosis presenting with acute PVT one month after bariatric surgery. 'A' indicates acute PVT denoted by dark intraluminal filling within the portal vein..