Objective:The aim of the present study was to evaluate the structural variations of nasal cavity in reference to frequency and types at the key area i.e. the ostiomeatal complex. Materials and Methods: Computed tomography of Paranasal sinuses of 50 patients was studied for clinical suspicion of various sinonasal pathologies. Results: The most commonly encountered anatomical variations in this study were Deviated Nasal Septum in 78% (39 patients), followed by Concha Bullosa in 36% (18 patients), Agger Nasi cell in 18% (nine patients), Pneumatised septum in 12% (six patients), Paradoxical Middle Turbinate and Septated Maxillary Sinus in 10% (five patients each) and Pneumatised Uncinate Process 6% (three patients). In quite a few patients we witnessed more than one variation. Conclusion: The anatomical variations in the nose and ostiomeatal complex are not uncommon, with the most frequent ones involving the nasal septum and the middle turbinate.

The aim of this review article is to determine whether a deviated nasal septum (DNS) is a potential risk factor for the occurrence of chronic rhinosinusitis (CRS). Nasal septal deformities include spur, deviated nasal septum, thickening, and dislocation. Deformities of the nose tip and columella are examples of external deformities, together with the deviated part of either cartilage or both the bony and cartilage part of the dorsum of the nose. Various symptoms of chronic rhinosinusitis include nasal obstruction, nasal or postnasal drainage, facial pain and pressure, and smell disturbances. For a long time, the deviation of the nasal septum is related to the pathogenesis, progression, and severity of chronic rhinosinusitis. Mechanisms involving mechanical and aerodynamics theory may be used to explain this relationship. Etiology in the occurrence of CRS are allergy, asthma, tooth Infection, immunodeficiency, mucociliary disorders, anatomical irregularities like DNS, concha bullosa, septum spurring, or an expanded cystic middle turbinate or prominent agger nasi cells that compromise the osteomeatal complex. The computed tomography (CT) scan imaging of the nasal cavity and paranasal sinuses has dramatically improved especially since the use of coronary CT scans. These scans make it simple to find even minute changes and abnormalities in bony structures and mucosal pathologies. An increase in the angle of DNS is significantly linked to specific disease patterns in the osteomeatal complex. This review shows that not all subtypes of DNS always result in the development of CRS. Only extremely severe DNS appears to contribute to the etiology of CRS.