Primitive pulmonary "malignant epithelioid hemangioendothelioma" versus epithelioid angiosarcoma. A case report and review of the literature.

We describe the case of a 56-year-old man presenting a primary pulmonary epithelioid angiosarcoma versus malignant epithelioid hemangioendothelioma still alive, without recurrence at nearly two years after the beginning of the symptoms. The primary pulmonary angiosarcoma is extremely rare, being reported only in a handful of cases. Metastatic involvement of the lung (90%) is far more common than primary pulmonary involvement (10%). Various predisposing condition for the development of angiosarcoma have been described. Early diagnosis is not common, because of the rarity of angiosarcoma in the lung and consequent low index of suspicion. Due to the paucity of cases, there are no defined treatment regimens for this entity. However, there is a tendency for surgical intervention in all reported cases.