Post-radiation atypical vascular lesion
LEGEND
This is a tumor with clinical and histological overlap with well-differentiated angiosarcoma.
Vascular spaces of variable size lined by a single layer of endothelial cells
Proliferation dissecting collagen fibers
Differentiation from angiosarcoma is based on the fact that the atypical vascular lesion is less infiltrative, has a more superficial localization, and shows very few cellular atypia with low mitotic activity.
Post-radiation atypical vascular lesion
LEGEND
Proliferation of irregular and angulated vascular slits dissecting the collagen fibers of the papillary and reticular dermis
Post-radiation atypical vascular lesion
Anastomosis of irregular and angulated vascular slits
Post-radiation atypical vascular lesion
LEGEND
Vascular spaces of variable size lined by a single layer of endothelial cells
