Correlation between diagnostic nasal endoscopy and computed tomography scans of patients with chronic rhinosinusitis: A cross-sectional study

The diagnosis of chronic rhinosinusitis (CRS) is usually based on a combination of symptoms, diagnostic nasal endoscopy (DNE), and computed tomography scan (CT scan). This study evaluates the correlation between DNE and CT scans in patients with CRS. This cross-sectional study included 52 patients diagnosed with CRS based on EPOS 2020 guidelines. All patients underwent DNE followed by CT scans and all the findings were assessed by the Lund-Kennedy and Lund-Mackay scoring system. Participants had an average age of 51.57 ± 15.58 years, with a male-to-female ratio of 2:1. Common symptoms included nasal discharge (96.2%), nasal congestion (86.5%), and sneezing (67.3%). The average Lund-Kennedy score was 3.83 ± 1.37 and the average Lund-Mackay score was 4.3 ± 2.4. DNE demonstrated high sensitivity (95.65%) and specificity (83.33%) compared to CT, with a positive predictive value of 97.78% and negative predictive value of 71.43%. DNE has been shown to correlate effectively with CT scans as a valuable diagnostic tool in the management of CRS. DNE is a valuable first-line diagnostic tool in CRS and can reduce the need for CT in appropriate cases.