Structural Variations of Nose and Paranasal Sinuses in Various Sinonasal Pathologies: Tomographic Study of 50 Cases in Bangladeshi People.

The aim of this study was to determine the frequency of structural variations in nose & paranasal sinuses in computed tomography in Bangladeshi people. This retrospective study was done at the Sir Salimullah Medical College Mitford Hospital and Apollo Hospitals, Dhaka, Bangladesh. Fifty (50) CT scan of Nose and Para nasal sinuses were collected from the patients presented with different sinonasal pathologies in OPD, IPD of both hospitals from July 2013 to June 2014. The scans were reviewed for the presence of different structural variations of nose and paranasal sinuses. The age range of the patients was 25 to 65 years. The most common anatomical variation in this study was hypertrophied inferior turbinate (82%) followed by ethmoidal bulla (70%), deviated nasal septum (64%), agar nasi cell (40%), concha bullosa (38%). In most of the patients we found more than one variation. There is wide range of anatomical variations in nose and paranasal sinuses which might be regarded as the aetiological factors of different sinonasal pathologies. To maximize patients' benefit and to avoid unexpected situations during surgeries as well as dreadful complications, individualized pre-planning through tomographic study should be considered.