Abstract:Abstract: Objective To investigate the clinical efficacy of three different approaches of endoscopic sinus surgery for fungal maxillary sinusitis, and then provide reference for the clinical individualized treatment of fungal maxillary sinusitis. Methods 84 patients with non-invasive fungal maxillary sinusitis from January 2016 to December 2017 were enrolled in the study. Routine nasal endoscopy and sinus CT scanning were performed before surgery, the patients were divided into three groups according to the location of the lesion. Group A: 30 cases were treated with inferior meatus pathways which left the lateral wall of nasal cacavity mucosal flap. Group B: 30 cases cases of nasal endoscopy combined with opening maxillary sinus orifice. Group C: 34 cases were treated with the above two ways. Results 84 cases were cured, all of the patients were free from disease postoperatively. All the patients were followed up for more than half a year. Bloody snot, facial pain, headache and ozena gradually disappeared. Nasal endoscopy showed that cavity and epithelialization are recovered well, no abnormal secretions in the nasal tract or residual lesions in the surgical cavity, no nasal adhesion or anterior nasal stenosis, nasolacrimal duct injury or other complications. Nasal endoscopy and sinus CT scanning was performed after surgery to evaluate cavity condition, there is residual disease. Conclusions Preoperative treatment of fungal maxillary sinusitis according to the location and extent of the lesion can fully expose the maxillary sinus cavity, effectively remove the lesions, ensure the normal physiological function of maxillary sinus mucosa, and avoid the normal injury of the nasal cavity and sinus to really achieve radical minimally invasive purpose.