Figure 2.

(a) A 4 cm diameter black plaque on the right thigh, surrounded by a distinct purple ring with few interspersed pale areas (b) Haematoxylin Eosin stain at low power 10× showing, blood vessels in papillary dermis lined by a single layer of hobnail-like endothelial cells, reticular dermis showing angulated vessels, dissecting collagen bundles (c) Haematoxylin Eosin stain at high power 40× showing the similar biphasic pattern in papillary and reticular dermis along with sparse lymphohistiocytic infiltrate, extravasation of erythrocytes, hemosiderin deposits