New Insights about Pulmonary Epithelioid Hemangioendothelioma: Review of the Literature and Two Case Reports

Figure 9

20 G Tru-Cut biopsy of the lung mass (a). H-E (b–e) images show vascular proliferation with epithelioid cells in a fibromyxoid stroma and presence of haemosiderophages ((b, c) 10x; (d) 20x). Some of the epithelioid cells show vacuolation (e). Immunostaining for CD31 revealed positivity of the neoplastic cells (brown colour), confirming the endothelial lineage of the tumor.

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