上縦隔に発生した類上皮性血管内皮腫の1例

Epithelioid Hemangioendothelioma of the Upper Mediastinum：Report of a Case

はじめに　類上皮性血管内皮腫は血管内皮由来のまれな腫瘍で，縦隔発生例はまれである．われわれは，上縦隔に発生した類上皮性血管内皮腫の1切除例を経験したので報告する．

A 81-year-old woman was referred to our hospital for neck discomfort. Chest computed tomography （CT） showed a tumor in the upper mediastinum. Fluorodeoxyglucose-positron emission tomography （FDG-PET） showed the mild accumulation in the tumor. Percutaneous biopsy was performed and epithelioid hemangioendothelioma was suspected, and the surgical treatment was performed. The histological study showed polygonal and irregular cells with nuclear atypia in myxoma-like substrate compatible with epithelioid hemangioendothelioma.