Figure 4

Histological section after hindquarter amputation demonstrating large dilated vascular spaces (V) lined by a dense population of atypical plump endothelial-like cells (T and arrow) which are surrounded by disorganized small diameter vascular channels. These features are consistent with angiosarcoma. (Haematoxylin & eosin staining; (A) 10× magnification, (B) 40× magnification).