Prevalence of Variant Anatomy of Paranasal Sinuses in Computed Tomography and its Correlation to Sinusitis:

This study aims at identifying the prevalence of multiple variants in CT of paranasal sinuses(PNS) done in our institution and to find out correlation to sinusitis if any. A retrospective analysis of 200 cases (100 in sinusitis group and 100 in asymptomatic group) of CT PNS was done at our institution. The prevalence of variants including those with surgical importance were studied. Comparison was done using Pearson’s Chi square test.The most common variant was deviated nasal septum, followed by lamellar concha followed by agger nasi cell in both the groups. Though variants were found in higher numbers in sinusitis group, there was no statistical significance in their prevalence between both the groups. It is customary to find innumerable variant anatomy in CT of paranasal sinuses. But there is no scientific correlation for the variants as causative factors of sinusitis. However the variant anatomy retains its significance to be mentioned in reporting in the surgical perspective.