Epithelioid hemangioendothelioma of the anterior mediastinum with osteoclast-like giant cells. Light microscopic, immunohistochemical, and electron microscopic study.

A case of epithelioid hemangioendothelioma of the anterior mediastinum in a 40-year-old woman is presented. It showed typical features described in such tumors, but in addition there were foci of osteoclast-like giant cells that were not previously reported in this lesion.