Effect of Functional Endoscopic Sinus Surgery on Functional and Symptomatic Outcomes in Patients with Chronic Rhinosinusitis: A Cross Sectional Study.

Chronic Rhinosinusitis (CRS) is a common condition causing significant symptoms to those affected, cause burden to the healthcare consumption and productivity loss (Fokkens et al. in Rhinol J 58:82-111, 2020). Chronic Rhinosinusitis is diagnosed clinically on the basis of characteristic symptoms with inflammation of the mucosa of the nose and paranasal sinuses of at least 12 consecutive weeks duration (Fokkens et al.