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Table 3 Grading of portal vein tumor thrombus

From: Clinical characteristics of hepatic Arterioportal shunts associated with hepatocellular carcinoma

Grade Definition Number of patients
0 No tumor thrombus. Only the portal venous invasion was observed. 20
1 Tumor thrombus was observed in branches of portal vein. 34
2 Tumor thrombus was observed in the right or left branches of portal vein. 50
3 Tumor thrombus was observed in the portal vein trunk. 33