無気肺を契機に発見された中縦隔迷走神経鞘腫の1例

Vagal Schwannoma in the Middle Mediastinum Found by Atelectasis on Chest X-ray：Report of a Case

はじめに　縦隔の神経原性腫瘍の多くが肋間神経や交感神経幹に由来し，胸腔内迷走神経鞘腫は比較的まれな疾患である．われわれは左胸腔内迷走神経より発生した神経鞘腫の手術例を経験したので，若干の文献的考察を加えて報告する．

An 70-year-old woman was reffered to our hospital to examine for a left lower lobe atelectasis on chest X-ray. Chest computed tomography （CT） showed the mass in middle mediastinum. The video-assisted thoracoscopic surgery （VATS） was performed to establish diagnosis and treat. 50 mm mass was found in the area surrounded by the descending thorasic aorta, esophagus, left atrium, left lower lobe, and mesiastinal pleura, and was regarded as a neurogenic tumor originating from the pulmonary branch of the vagal nerve. The histopathological diagnosis was benign schwannoma. She was dischraged on the seventh postoperative day, without any neurological complications.