Primary endotheliosarcoma of the thoracic aorta.

A case of thoracic aortic endotheliosarcoma is reported. The diagnosis of an endothelial neoplasm was confirmed by ultrastructural study and the use of cell markers: Antigene VII, Antigene H and a Lectin: Ulex Europaeus 1. The macroscopic aspect was particular. There were buds on the aortic intima. The tumor growing along the intimal surface, had invaded and destroyed the vascular wall. There was a stenosis of the origin of the innominate artery and a total obstruction of the left subclavian artery.