Fig. 5
From: Subcutaneous axillary primary epithelioid hemangioendothelioma: report of a rare case
Histopathological findings of the axillary tumor. a Macroscopic findings of the axillary tumor. b Tumor was angiocentric. c Some tumor cells showed a primitive vascular cavity (arrow) that could contain red blood cells. d Nuclear atypia was marked, and mitotic figures (arrow) of about three cells/2 mm2 were observed. e, f Immunostaining showed tumor cells to be positive for the vascular markers, CD31 (e) and CD34 (f)