Concha bullosa: Frequency and appearances on sinonasal CT.

Aeration of the middle turbinate, termed "Concha bullosa", is one of the most common, obstructive, anatomic variants seen in patients with sinusitis. The present study was carried out on 150 patients of chronic sinusitis, who underwent CT scan paranasal sinuses, coronal section prior to Functional Endoscopic Sinus Surgery (FESS). The CT Scans were evaluated to detect the incidence of Concha bullosa and its types, the significance of Concha bullosa in genesis of osteomeatal complex disease and relation between type of Concha bullosa and osteomeatal complex disease. Later the patients were subjected to FESS. In this study we found that the overall incidence of inflammatory disease in the osteomeatal complex in these symptomatic patients was no different between with and without Concha bullosa and osteomeatal complex disease is found to be more frequent if peumatization is localized to inferior part of middle turbinate. Concha bullosa requires specific endoscopic surgical techniques.