Modified CT Scan Scoring System for Evaluating Symptom Severity of Chronic Rhinosinusitis.

There are various subjective as well as objective tools to evaluate the severity of chronic rhinosinusitis (CRS). SNOT-22 is the most commonly used subjective scoring system to determine the severity of CRS. Lund-Mackay (LM) CT scan scoring is widely used as an objective tool in CRS. However LM scores does not correlate well with the subjective tools. We evaluated the modified CT scan scoring system (SN score) for its efficacy in determining the severity of CRS in both subjective as well as objective manner. To correlate the severity of symptoms and CT scan findings in adult patients with chronic rhinosinusitis by estimating the strength of correlation of severity of symptoms of CRS assessed by SNOT-22 scorings with CT scan findings by Lund Mackay scoring system and SN CT scan scoring system. A prospective, observational study was conducted in the tertiary care center from June 2019 to August 2020. The study included 150 adult patients diagnosed with Chronic Rhino Sinusitis resistant to primary medical therapy, who were subjected to CT scan imaging. The symptom severity of CRS was assessed by the SNOT 22 scores. CT scan was done and Lund Mackay scores and SN CT scan scores by the senior author were calculated. The correlation of SNOT 22 score with LM score and Modified CT score were assessed. The correlation of LM score with SNOT 22 score was assessed by plotting Scattered plot diagram, which showed a moderate positive, statistically significant correlation (Person correlation co-efficient: 0.466;