Background: Chronic sinusitis is an important health issue often seen in daily clinical practice. Concha bullosa is an anatomical variation found in patients which leads to chronic sinusitis. Concha bullosa is hypertrophied pneumatized middle turbinate which obstructs the drainage of the anterior group of paranasal sinuses into the stomatal complex and nasal cavity. Objective: To study the role of concha bullosa in patients with chronic sinusitis. Materials and Methods: This is a prospective cross-sectional study. This study was done between December 2019 to February 2021 at a tertiary care teaching hospital in eastern India. Result: There were 118 patients with middle turbinate concha bullosa were detected. The mean age of the patients in this study was 32 years with an age range from 1 to 70 years. There were 67 males and 51 females with a male to female ratio of 1.3:1. Out of 118 concha bullosa, 54 (45.76%) were found on the right side, 41(34.74%) on the left side, and 23 on both sides (19.49%). Out of the 118 cases of concha bullosa, lamellar type was found in 36 cases (30.50%), bulbous type in 44 cases (37.28%) and extensive in 38 cases (32.20%). Conclusion: The middle turbinate is considered a possible causative factor for chronic sinusitis.