1. Batra PS,Lanza DC. Endoscopic power-assisted orbitalexenteration. Am JRhinol,2005,19:297-301 2. Coppit GL,Eusterman VD,Barrels J,et al. Endoscopic resection of chondrosarcomas of the nasal septum:a report of 2 cases. Otolaryngol Head Neck Surg,2002,127 ......