CT Appearances of Liver Hemodynamic Change in Patients with Tumor Embolismus in Portal Vein

Objective To study the hemodynamic change and the machanism of anomalous enhancement of hepatic peripheral area in arterial phase in patients with tumor embolismus in portal vein.Methods The imaging data in 30 cases of hepatic carcinoma (hepatic cell carcinoma in 28 cases and metastatic carcinoma in 2 cases)with tumor embolismus in portal vein confirmed by CT and angiography were reviewed and analysed.Results The tumor embolism were formed in portal stem vein is 3 cases,portal stem vein right and left branches in 18 cases,and right and left branches in 9 cases.The cavernous transformation of portal vein was in 26 cases.The blood vessel grouped and thickened in hepatic portal,the fissure of liver and fossa of gallblader were showed on CT.The hepatic peripheral area was enhanced in arterial phase in 10 cases.Conclusion The collateral branch underwent cavernous transformation after formation of tumor embolism in portal vein the liver blood supply is still maintain.The hepatic peripheral area in arterial phase are anomalously enhanced,it is suggested that the portal vein blood supply is reduction and the arterial blood supply is complemently increased.