患者，男，63岁。双侧慢性上颌窦、筛窦炎并发鼻息肉，于1996年1月9日局麻下行双侧上颌窦、筛窦联合根治及鼻息肉摘除术，经过顺利。翌日上午发现双侧面颊、颈部直至锁骨上窝皮下肿胀，触之有明显捻发音。颈胸部透视报告：颈部两侧广泛性皮下气肿，心肺、纵隔未见异常。因气肿 Patient, male, 63 years old. Bilateral chronic maxillary sinus, ethmoid sinus complicated with nasal polyps, on January 9, 1996 local anesthesia under bilateral maxillary sinus, ethmoid sinus surgery and nasal polypectomy, after a smooth. The next morning found bilateral cheeks, neck until the supraclavicular fossa subcutaneous swelling, touching a significant twist pronunciation. Cervical thoracoscopy report: extensive subcutaneous emphysema on both sides of the neck, heart and lung, mediastinal no abnormalities. Because of emphysema