[A case of benign schwannoma arising in the brachial plexus with intrathoracic extension].

A case of benign schwannoma originating from the lowest trunk of the left brachial plexus with intrathoracic extension was reported. Intrathoracic growth of a schwannoma of the brachial plexus has been reported in only five cases in the literature. The patient was a 35-year-old man and had been pointed out an abnormal shadow at the left lung apex on the roentgenogram since 20-year-old. The tumor shadow was increased to seven cm from four in size on recent chest X-ray. We performed a video-assisted thoracoscopic surgery with the oblique skin incision at the left neck and removed the tumor completely and safely.