[Clinical application of modified global osteitis score in chronic rhinosinusitis].

To compare GOSS and a newly proposed modified scoring system for assessment of CRS with osteitis.Seventy-one CRS patients were enrolled prospectively.Their preoperative computed tomography (CT) were assessed for severity and extent of osteitis by two otolaryngologists using OsiriX DICOM Viewer software. The method of measurement was similar with GOSS, which retained scoring maxillary and sphenoid, producing a modified global osteitis score(rang: 0-20). Collected the history and completed VAS, SNOT-22, Lund-Kennedy, Lund-Mackay in preoperative. Postoperative follow-up mounted up to 12 months and evaluating CRS patients' outcome. Compared for test-retest and inter-rater reliability between the modified system and GOSS.There is a significant linear positive correlation between Modified GOSS score and GOSS(=0.913,<0.001).And Modified GOSS had more association with pre and postoperative L-M and L-K scores than GOSS (=0.316, 0.357). The modified GOSS showed the highest inter-rater and test-retest, interclass correlation coefficient (pre-ICC=0.947; post-ICC=0.943).Modified GOSS may be a more suitable and convenient scoring system for clinical practice to grading osteitis.