Polymorphous hemangioendothelioma.

Polymorphous hemangioendothelioma is a rare vascular tumor; only 5 patients have been previously described. Half of all cases described have occurred in the thoracic cavity, all being discovered on chest radiologic studies obtained for other reasons. This report presents the case of a female patient with polymorphous hemangioendothelioma and a brief review of the current literature.