The case of a 47-year-old man with a tumor of the posterosuperior mediastin
um is reported. Surgical biopsy sample revealed a hemangiopericytoma, but r
adical excision was impossible because of massive bleeding. Percutaneous em
bolization of mediastinal tumor was performed to reduce peroperative blood
loss. It allowed uneventful complete removal of the lesion. We recommend pr
eoperative embolization in cases of hypervascular mediastinal tumors. (C) 2
000 by The Society of Thoracic Surgeons.