Malignant hepatic vascular tumors in adults: Characteristics, diagnostic difficulties and current management

Figure 1 Hepatic epithelioid hemangioendothelioma: Pathological findings. A: Hematoxylin eosin staining, 20× objective; B: CD34 immunostaining, 20× objective; C: CD31 immunostaining, 20× objective, glomerular vessels (arrows); D: CD31 immunostaining, 20× objective.

Figure 2 Hepatic angiosarcoma: Pathological findings. A: Hematoxylin eosin staining, 40× objective; B: Hematoxylin eosin staining, 40× objective, vascular spaces lined by malignant endothelial cells; C: Hep par 1 immunostaining - Hematoxylin eosin background staining, 20× objective; hepatocytes Hep par 1 positive, captive in the tumor mass; D: CD 34 immunostaining, 20× objective, liver biopsy; E: CD 34 immunostaining, 40× objective, liver biopsy (enhanced objective); F: CD34 immunostaining, 20× objective; G: CD31 immunostaining, 20× objective; H: CD31 immunostaining, 40× objective

Figure 3 Hepatic hemangiopericytoma: Pathological findings. CD34 immunostaining, 20× objective, liver biopsy