Hepatic artery aneurysm secondary to epithelioid angiosarcoma.

gressive mesenchymal neoplasms, are responsible for less than 1% of all soft-tissue sarcomas. The incidence of these tumours is 2–3 cases per 1 000 000 annually. A small subset of these tumours may arise within a large vessel wall, and of the few reported cases, there seems to be a predilection for the pulmonary vasculature or the aortic wall. To our knowledge, angiosarcomas have not been described within a visceral artery aneurysm. We report a case of epithelioid angiosarcoma arising from the common hepatic artery with aneurysm formation and metastatic involvement of the liver and perigastric soft tissue.