Fig. 3
From: Debulking surgery for venous hemangioma arising from the epicardium: report of a case
a–c Histopathologic findings, showing characteristic venous structures widely in the fat layer of the pericardium. A vascular lumen is formed by a vein containing thin elastic fibers (a, b hematoxylin and eosin stain; c Elastica van Gieson stain). d, e Immunohistochemical staining with endothelial markers CD31 (d) and CD34 (e), confirming the presence of a thin internal layer of endothelial cells