Fig. 9From: Unicentric epithelioid hemangioendothelioma of the calcaneus: a case report and review of literatureCD34 immunohistochemical stain, ×200. Tumor cells stain positively for endothelial marker CD34. This stain also highlights the anastomosing cord-like architecture of the tumor which recapitulates the formation of primitive blood vesselsBack to article page