Abstract
OBJECTIVES: To study the various anatomical variations of the osteomeatal complex and their incidence in patients with chronic rhinosinusitis. DESIGN: A prospective study was done on 100 computed tomography scans of patients with chronic rhinosinusitis. RESULTS: Various types of anatomical variations were observed in the study viz. concha bullosa, septal deviation, paradoxical middle turbinate, retroverted uncinate process, enlarged ethmoid bulla, haller cells, agger nasi cells, onodi cells and pneumatization of vomer. The most frequent anatomical variation found was septal deviation (30%), followed by presence of concha bullosa (26%). CONCLUSION: Variations are common in the osteomeatal complex. These variations may predispose to sinusal diseases and hence require correction. Also, preoperative detection of such variations by computed tomography avoids complications during functional endoscopic sinus
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