CDFI and CEUS in identification of benign or malignant portal vein thrombosis

Objective To observe the value of CDFI and CEUS in identification of benign or malignant portal vein thrombosis.Methods The images of CDFI and CEUS of 33patients with portal vein thrombosis(PVT) were retrospectively analyzed.There were 23cases of portal vein tumor thrombosis and 10cases of portal vein blood thrombosis.Results In 23 portal vein tumor thrombosis,there were 17complete embolization and 6partial embolization.In 10portal vein blood thrombosis,there were 3complete embolization and 7partial embolization.The rate of the complete embolization in the portal vein tumor thrombosis was higher than that in the portal vein blood thrombosis(P=0.026),indicating that complete embolization was more usual in the tumor thrombosis,while partial embolization happened more often in the blood thrombosis.Moreover,CDFI showed that more tumor thrombosis located in the branches of portal vein with higher and heterogeneous echo,while blood thrombosis was opposite and might occur secondary to splenectomy and liver cirrhosis.CEUS mainly showed the fast wash-in and fast wash-out in tumor thrombosis,but no enhancement of blood thrombosis.Conclusion CDFI helps to identify the nature of PVTs.CEUS is of significant value in differential diagnosis of tumor thrombosis and blood thrombosis.