A case of epithelioid hemangioendothelioma in the hilar region of the lung

A 68-year-old woman was pointed out an abnormal shadow in the hilar region of the left lung on the routine chest X-ray at an annual check-up.rShe had no subjective symptoms. The tumor was slightly getting bigger and therefore operation was performed. A dark brown, hard and solid tumor was covered with a thin and fibrous membrane, but not with pulmonal or mediastinal pleura and did not invade surrounding tissue. The tumor was immunohistochemically diagnosed as epithelioid hemangioendothelioma on the basis of associated with immunoreactivity to factor-VIII related antigen. Epithelioid hemangioendothelioma is a rare tumor and has not been reported in the hilar region of the lung. Epithelioid hemangioendothelioma must be considered as a probable tumor on an abnormal shadow in the hilar region.