Correlation of Lund-Mackay and SNOT-20 Before and After Functional Endoscopic Sinus Surgery (FESS): Does the Baseline Data Predict the Response Rate?

Background/objective: to assess whether baseline snot-20 and lund-mackay score can predict response to fess. materials and methods: for 50 consecutive patients who underwent functional endoscopic sinus surgery (fess) for chronic rhinosinusitis (crs) in a university-affiliated hospital from january 2006 to february 2007, snot-20 and lund-mackay scores were evaluated reoperativelyand after three months postoperatively. results: pearson’s correlation coefficient of the lund-mackay score and snot-20 score was 0.77 before fess and 0.73 after fess (p <0.001). all multivariate regression models for evaluating whether the primary symptoms and ct scan findings predict the response rate showed a weak to moderate fitness to primary data based on all symptom domains and in each model, only the primary symptom domain of the dependent variable remain in the model.conclusion: the outcome of fess in patients with crs is moderately related to primary symptoms according to snot-20 as well as the lund-mackay radiologic score.