(acquired progressive lymphangioma), lymphatic channels appear to be dissecting through dense collagenic bundles.
The histologic differential diagnosis of KS includes other vascular tumors such as benign lymphangioendothelioma
, hobnail hemangioma, spindle cell hemangioma, kaposiform hemangioendothelioma, cutaneous angiosarcoma, and acroangiodermatitis.
First described in 1911, (2) its controversial histogenesis resulted in several names (3,4) such as mesothelioma, lymphangioendothelioma
, endodermal inclusion, hamartoma, and so forth.