The CT and MRI Features of Hepatic Epithelioid Hemangioendothelioma with the Correlation of Pathology

Purpose: To analyze the CT and MRI features of hepatic epithelioid hemangioendothelioma(HEHE) with the correlation of pathology. Materials and Methords: CT and MRI data of ten cases with HEHE comfirmed by surgery and pathology were retrospectively analyzed. Results the lesions of six cases were multiple and mostly located adjacent to the hepatic capsule, the "capsular retraction" sign was found in eight cases, the "halo" sign was found in six cases, the "lollipop" sign was found in two cases, the "tumor vessel"sign was found in eight cases. After contrast administration, mild to moderate peripheral enhancement was assessed in arterial phase, and progressive enhancement in portal venous phase and delay phase in eight cases, mild peripheral enhancement was assessed in arterial phase, but no significant alteration in portal venous phase and delay phase in two cases. Conclusion: multiple nodules under liver capsule, the capsular retraction sign, the halo sign, the lollipop sign and the tumor vessel sign were characteristic imaging features of HEHE, the lollipop sign and the tumor vessel sign have specificity in the diagnosis and differential diagnosis.