Lin K.-Y.Chen P.-Y.TE-HUEI YEH2022-01-192022-01-1920180300-0729https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044257114&doi=10.4193%2fRhino15.250&partnerID=40&md5=8b2655e6a62be437341d2a27d0cb0390https://scholars.lib.ntu.edu.tw/handle/123456789/592657Various factors have been proposed to be related to refractory chronic rhinosinusitis (CRS). Treatment for refractory CRS is challenging for ear, nose, and throat (ENT) surgeons. The aim of the study was to determine the clinical features associated with the severity of CRS that may necessitate revision surgery by eliminating the bias of the surgeon’s tchnique using standardizing surgical procedures. Sinus wall thickness and blood eosinophilia, which may represent the depth of inflammation in CRS, are associated with the need for revision surgery. We found that, when the thickness of the postero-lateral maxillary sinus wall is more than 3.03 mm, there is an increased probability for a need for revision surgery. CRS patients with thickened sinus walls were found to have poorer outcomes. Further research is needed in order to justify this type of surgical procedure for CRS. ? 2018, International Rhinologic Society. All rights reserved.Chronic rhinosinusitis; Eosinophilia; Inflammation; Osteitis; Refractory[SDGs]SDG3chronic disease; complication; diagnostic imaging; eosinophilia; female; human; inflammation; male; maxillary sinus; middle aged; pathology; patient selection; recurrent disease; rhinitis; sinusitis; treatment outcome; x-ray computed tomography; Chronic Disease; Eosinophilia; Female; Humans; Inflammation; Male; Maxillary Sinus; Middle Aged; Patient Selection; Recurrence; Rhinitis; Sinusitis; Tomography, X-Ray Computed; Treatment Outcomejournal article10.4193/Rhino15.250292899752-s2.0-85044257114