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.