[Schwannoma in the Middle Mediastinum Originating from the Vagal Nerve；Report of a Case].

A 44-year-old woman was referred to our department with a mediastinal tumor detected by computed tomography performed as a preoperative examination for cervical cancer. There was a 32 mm solid mass in the area surrounded by the descending thoracic aorta, esophagus, left atrium, left lower lobe, and mediastinal pleura. The tumor was removed thoracoscopically. The mass was regarded as a neurogenic tumor arisen from the branch of the vagus nerve. Neither symptoms of postoperative neurological disorders nor signs of recurrence have been noted to date. The histopathological diagnosis was schwannoma.