Introduction:The anatomy of nose is one of the most variable in the whole human anatomy. Knowledge about the possible variations is never complete, since there is always a scope to understand better and know more. Numerous studies have been undertaken in the past to better the already existing know-how about the various anatomical deviations in the nose and paranasal sinuses causing chronic rhinosinusitis. The present study was carried to know the prevalence of variations in sinonasal anatomy causing chronic sinusitis.