Totally Thoracoscopic Resection of Schwannoma Located in Retroperitoneum and Posterior Mediastinum：Case Report

We here report a case of retroperitoneal and posterior mediastinal schwannoma resected via a thoracoscopic approach.A man in his 40s was referred to our hospital because a well-circumscribed 51×47 mm diameter mass had been identified in the retroperitoneal area between the abdominal aorta and left kidney by computed tomography（CT）．The mass also extended into the posterior mediastinum. The suspected diagnosis being neurogenic tumor, surgery was performed for diagnostic and therapeutic purposes. Surgery was initiated via a thoracoscopic approach because the tumor head was located in the posterior mediastinum. The tumor appeared to have originated in the sympathetic trunk and was removed completely via the thoracoscopic approach. The pathological diagnosis was retroperitoneal benign schwannoma. The postoperative course was uneventful and the patient was discharged 7 days post-surgery. Thus, schwannoma located in retroperitoneum and posterior mediastinum could be successfully resected via a thoracoscopic approach.