Overview
Malignant epithelioid hemangioendothelioma (EHE) of the liver is a rare, low-grade malignant neoplasm characterized by its vascular origin and potential for veno-occlusive behavior, often mimicking other hepatic conditions 1.Diagnosis
Histological Features: Requires examination showing endothelial origin with epithelioid morphology 1.
Immunohistochemistry: Positive for endothelial markers such as CD31 and CD34, often negative for lymphatic markers 1.
Ultrastructural Analysis: May be necessary to confirm endothelial nature 1.
Imaging: CT and MRI can show characteristic vascular involvement and mass effects 1.
Metastasis Assessment: Lung imaging to detect potential metastases resembling intravascular bronchiolo-alveolar tumor (IVBAT) 1.Management
Surgical Resection: Primary treatment when feasible, aiming for complete resection 1.
Systemic Therapy: Limited evidence; may include chemotherapy regimens targeting soft tissue sarcomas (e.g., doxorubicin, ifosfamide) 1.
Supportive Care: Management of symptoms and complications, including portal hypertension and liver function support 1.Special Populations
No Specific Data: Abstracts do not provide specific guidance for pregnancy, pediatrics, elderly, or comorbidities 1.Key Recommendations
Confirm diagnosis through histological, immunohistochemical, and ultrastructural analyses (Evidence: Weak) 1.
Consider surgical resection as the primary treatment modality when possible (Evidence: Weak) 1.
Evaluate systemic therapy options based on soft tissue sarcoma protocols, though evidence is limited (Evidence: Weak) 1.References
1 Fukayama M, Nihei Z, Takizawa T, Kawaguchi K, Harada H, Koike M. Malignant epithelioid hemangioendothelioma of the liver, spreading through the hepatic veins. Virchows Archiv. A, Pathological anatomy and histopathology 1984. link