Anatomical variations in ostiomeatal complex have been implicated in causation of chronic sinusitis. We have attempted to study the occurrence of anatomical variations of the middle turbinate and their causal relationship with occurrence of chronic rhinosinusitis. In our study CT coronal sections of ostiomeatal complex of 50 adult patients, diagnosed to have chronic rhinosinusitis were analysed for anatomical variations. Data was analysed by frequency, percentage and by Chi Square test. Excel software was used to analyze the statistical data. Concha bullosa was seen in 32% of the patients, paradoxical bent middle turbinate in 10%, Combination of paradoxical bent and concha bullosa was seen in 1 case. Anatomical variation in middle turbinates were seen in 14 (28%) out of 44 patients with PNS mucosal abnormalities and 6 (12%) out of 6 patients without PNS mucosal abnormalities. Results show that presence of anatomical variants in middle turbinate alone does not mean a predisposition to sinus pathology.
