Correlation of diagnostic nasal endoscopy and CEMRI (n=60)
This was done in 60 patients because all three diagnostic tests i.e. endoscopy, biopsy and imaging were done in them. As shown in Table 2, out of a total of 60 patients, 40 (66.7%) had abnormal endoscopic findings while 51 (85%) patients showed positive CEMRI findings. Out of 20 patients having normal endoscopy, 13 patients had abnormal CEMRI. But two patients who were CEMRI negative had endoscopic features for CAM. Seven patients were both endoscopy and CEMRI negative for CAM indicating no disease. Considering imaging as a superior diagnostic tool for the diagnosis of CAM, the various parameters for endoscopy were calculated. The sensitivity of DNE was 74.50%, specificity was 77.77%, positive predictive value was 95% and negative predictive value was 35%. Diagnostic accuracy came out to be 75%. Most of the endoscopy positive patients of CAM were CEMRI positive. Agreement between DNE and CEMRI in diagnosis of CAM was good with a kappa coefficient of 0.370.