摘出により著明な疼痛改善を得た肋間神経由来神経鞘腫の1例

Schwannoma of Intercostal Nerve Resulting in Significant Pain Relief Following Excision：Report of a Case

はじめに　神経鞘腫は末梢神経Schwann細胞由来の良性腫瘍であり，画像検査で偶発的に発見されることが多い．われわれは，胸痛の精査で発見され，単孔式胸腔鏡下手術での摘出により著明な疼痛改善を得た肋間神経由来神経鞘腫の1例を経験したので報告する．

An 80-year-old male underwent chest computed tomography （CT） due to complaints of right-sided chest pain. A chest wall tumor was identified in the right eighth intercostal space, corresponding to the location of his pain. The patient was subsequently referred to our department for further evaluation and treatment. Utilizing single-port thoracoscopic surgery, the tumor was successfully excised. Intraoperatively, the tumor was found beneath the parietal pleura, was contiguous with to the intercostal nerve. Histopathological analysis confirmed the diagnosis of schwannoma originating from the intercostal nerve. The right-sided chest pain was reduced after operation significantly. No recurrence or relapse of symptoms was observed during follow-up. Although schwannoma of the chest wall in asymptomatic in many cases, in this case, localized pain corresponding to the tumor site was evident. This emphasizes the importance of considering schwannoma in the differential diagnosis of chest pain.