Swain, Smruti2019-12-062019-12-062018-03Swain Smruti. A Study of Anatomical Variations in Patients with Chronic Rhinosinusitis. Annals of International medical and Dental Research. 2018 Mar; 4(2): 1-52395-28222395-2814http://imsear.searo.who.int/handle/123456789/188487Background: Improvements in functional endoscopic sinus surgery (FESS) and computed tomography (CT) have concurrently increased interest in the anatomy of the nose and paranasal sinuses. Revolutionary changes in the surgical treatment of rhino sinusitis in recent years, particularly in endoscopic surgery, require the surgeons to have detailed knowledge of the anatomy of the lateral nasal wall, paranasal sinuses and surrounding vital structures . A number of anatomical variants in the region are encountered, many of which are detectable only by the use of CT . These variations might induce osteomeatal obstruction, preventing mucus drainage and predisposing to chronic rhino sinusitis. The aim of this prospective study was to analyze the incidence of anatomic variations in a series of 100 patients with persistent symptoms of chronic rhinosinusitis after failure of preliminary medical therapies and their correlation with paranasal sinus disease, to assess whether anatomic variations are associated with disease pathology and to identify those variants that may impact operative safety. Setting: Tertiary care otolaryngology unit. Methods: 100 consecutive cases of chronic rhino sinusitis patients attending the ENT outpatient department ,during a period of June 2015-May2017, who had chronic sinusitis for more than three months duration not responding to the medical treatment and who were willing to undergo Functional Endoscopic Sinus Surgery satisfying the inclusion criteria were studied. Results: In our study it was observed that 72% patients had anatomic variations. 43% of the chronic sinusitis cases had two or more anatomical variations and 29 % of the cases had single anatomical variation. Deviated nasal septum in 41% cases, Concha bullosa was found in 36%, paradoxical middle turbinate in 11%cases. Conclusion: Prevalence of multiple anatomical variations was more in our study in comparison to single anatomical variation. Deviated nasal septum was the most common anatomical variation encountered in our study followed by concha bullosa.Journal ArticleIndiaAssociate Professor, Department of ENT, SCB Medical College Cuttack, Odisha, India.