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Objective: Minimally invasive and nasal endoscopic treatment of maxillary sinus cyst comparison of the two methods. Methods: The 68 cases of maxillary sinus cyst patients were randomly divided into two groups, Observation group 27 cases: The minimally invasive group; Control group: 41 cases were nasal endoscopy group. According to the location of the cyst with these three operation method: (1) Nasal passages in maxillary sinus natural caliber; (2) Inferior meatus fenestration; (3) Middle meatusfatcat:ooq6vwszdfdzdms67nqk6muy3i