Epithelioid Hemangioendothelioma of the Liver

Authors:
  • ARAlain Roche
    Alain Roche
  • DMDidier Mathieu
    Didier Mathieu
  • YMYves Menu
    Yves Menu
  • MDMonique Delos
    Monique Delos
  • JOJean-Bernard Otte
    Jean-Bernard Otte
  • LLLucie Lalonde
    Lucie Lalonde
  • JPJacques Pringot
    Jacques Pringot
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Abstract
The MR imaging features in five patients with hepatic epithelioid hemangioendothelioma (EHE) were correlated with CT and pathologic findings. Two hemangioendotheliomas appeared as multiple nodular lesions with a predominantly peripheral location in the liver. In three more extensive cases, the tumors formed confluent peripheral lesions with macroscopic invasion of portal or hepatic veins (n = 3), signs of portal hypertension (n = 3), and nodular hypertrophy of uninvolved liver (n = 2). These findings, suggestive of EHE, were well demonstrated by MR imaging and CT. The internal architecture of the tumors was clearly depicted on T2-weighted MR images. Viable tumor peripheries appeared moderately hyperintense relative to liver. The center of the tumors consisted of one or several concentric zones. Hyperintense central zones were composed of loose, edematous connective tissue. Hypointense zones contained mainly coagulation necrosis, calcifications, and scattered hemorrhages. Except for the presence of calcifications, the internal architecture of EHE was better defined by MR imaging than by CT.