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探讨鼻内窥镜术后中鼻道粘膜的病理结构变化。方法：筛选１０例经界内窥镜手术后中鼻道粘膜恢复较好的慢性鼻窦炎患者，分别于术后第１、２、３、４个月取中鼻道粘膜进行电镜检查。结果：鼻内窥镜术后第１个月时，粘膜内主要表现为纤维组织增生。术后第２个月，粘膜内纤维增生与溶解并存。术后第３个月，粘膜基本恢复正常结构，但功能不完善。术后第４个月，粘膜恢复正常结构，同时也显示其功能基本恢复。结论：鼻内窥镜术后中鼻道粘膜可以完全恢复正常，但需要至少４个月时间，为了提高治疗效果，较长时间的术后复查是非常重要的。
To explore the pathological changes of the middle nasal mucosa after nasal endoscopy. Methods: Ten patients with chronic sinusitis who recovered from the middle nasal mucosa after endoscopic surgery were screened. Electron microscopy was performed on the nasal mucosa at 1, 2, 3 and 4 months after operation. Results: The first month after endoscopic sinus surgery, the main manifestations of mucosal fibrosis. 2 months after surgery, mucosal fibrosis and lysis co-exist. The third month after surgery, mucosa returned to normal structure, but the function is not perfect. In the fourth month after operation, the mucosa returned to normal structure and also showed a basic recovery of its function. Conclusion: The nasal mucosa of nasal endoscopy can be completely restored to normal, but it needs at least 4 months. In order to improve the curative effect, longer time of postoperative review is very important.