作者首先复习了文献中有关赞成和反对中鼻道上颌窦口扩大术治疗鼻窦炎的意见。赞成者认为,中鼻道区的解剖变异以及窦口周围、前组筛窦的病变是鼻窦炎的原因,窦口扩大术可去除中鼻道的病变;反对者认为,窦口手术可造成永久性损伤,引起窦口闭塞,而下鼻道开窗引流可获较满意效果。上颌窦口解剖各异,其直径小于5 mm,长度可为1～22mm。鼻窥镜检查及 CT 证实了窦口及中鼻道的病变可使鼻窦炎久治不愈或上颌窦根治术失败。鼻内窥镜直视下,中鼻道窦口扩大术可作宽敞的 The author first reviewed the literature on the pros and cons of the middle maxillary ostium surgery to treat sinusitis. In favor of those who believe that the anatomical variations in the middle nasal area and around the ostia, ethmoid sinus lesions in the former group is the cause of sinusitis, sinus enlargement can remove the path of the middle nasal passages; opponents believe that sinus surgery can cause permanent Sexual injury, causing sinus ostium occlusion, and lower nasal cavity fenestration can be more satisfactory results. Maxillary sinus ostium different anatomy, the diameter of less than 5 mm, the length of 1 ~ 22mm. Endoscopic and CT confirmed the sinus and middle nasal lesions can make long-term sinusitis cure or maxillary sinus failure. Under direct vision of the nasal endoscope, the widening of the mid-nasal sinus ostium can be done