目的 :观察内镜上颌窦术后采用微波热凝术辅助清除上颌窦内残留的病变组织效果以及对手术疗效的影响。方法 :在 70°内镜引导下 ,导入微波治疗电极 ,经扩大的上颌窦自然口清除上颌窦内下壁、底壁等部位残留的病变组织。结果 :本组 2 6例 (37侧 )患者中 ,2 3例 (33侧 )原窦内残留的病变组织均获清除 ,无复发 ,清除率 89.2 % ;17例 (2 2侧 )上颌窦内炎性分泌物消失。结论 :鼻内镜下微波热凝术可清除上颌窦内残留的病变组织 ,避免再行Caldwell Luc等术式的创伤。提高了内镜鼻窦手术的疗效。 Objective: To observe the effects of endoscopic maxillary sinus surgery assisted by microwave thermocoagulation in the removal of residual lesions in the maxillary sinus and its effect on the surgical outcome. Methods: Under the guidance of 70 ° endoscope, the electrode of microwave treatment was introduced. The enlarged maxillary sinus natural orifice was used to remove the residual lesion in the inferior wall and bottom wall of maxillary sinus. Results: Twenty-three cases (33 sides) of the 26 patients (37 sides) had the residual lesion in the original sinus, and no recurrence was found. The clearance rate was 89.2%. Seventeen cases (22 sides) of maxillary sinus Inflammatory secretions disappeared. Conclusion: Endoscopic microwave thermocoagulation can remove the residual lesions in the maxillary sinus and avoid the trauma of Caldwell Luc. Improve the efficacy of endoscopic sinus surgery.