Background: Chronic Rhinosinosinusitis (CRS) is one of the common diseases affecting people globally with significant negative impact on quality of life. The objective of this study is to compare the efficacy of CT and nasal endoscopy finding for the evaluation of CRS in patients with persistant complains despite appropriate medical therapy. Methods: Patients attending ENT OPD of SIMS, with any complains of CRS for more than 4 weeks not responding to medical treatment. Patients are selected by Random sampling method. Results: The commonest major presenting symptom among the patients was observed as nasal obstruction and headache the minor factor. Males were affected more commonly on nasal endoscopy , the most common finding was congested nasal mucosa and mucopurulent nasal discharge .Frontal cells most commonly seen on Ct scan and maxillary sinus was most commonly involved .DNS is seen in both DNE and CT scan. Conclusion: CRS can be reliably identified using AAO-HNS Task force criteria 1997.Diseased ,oedematous or congested nasal mucosa ,purulence , pathological secretions or mucous in middle meatus and early polypoid changes have nonspecific features on coronal CT and endoscopy has essential role in diagnosing this pathology , is an outpatient procedure , relatively economic with no radiation hazard , however there are certain limitations of DNE which includes patients with gross DNS , constricted middle meatus , certain anatomical variants and presence of hidden air spaces like sphenoid sinus , ethmoidal bulla , haller cells , frontal cells ,posterior ethmoidal cells,etc .Hence we conclude that both are complimentary to each other.

Introduction : Osteomeatal unit is a functional unit of the anterior ethmoid complex representing the final common pathway for the drainage and ventilation of the frontal, maxillary and anterior ethmoid cells .Osteomeatal complex has become an area of active radiologic and pathophysiologic investigation with the development of endoscopic sinus surgery for inflammatory sinus disease. The aim of this study was to investigate the anatomical vari Aim : ation of the middle turbinate concha bullosa , incidence of concha bullosa and its correlation with nasal septal deviation. based on paranasal sinus imaging. A prospective study was performed in the Department of ENT and Materials and Methods : Head Neck Surgery over a period of 5 years, to determine the prevalence of Concha bullosa in patients who presented to our out patient department with symptoms of nasal obstruction, headache, post nasal drainage and facial pain , and underwent CT scan of Paranasal sinuses. We evaluated 462 CT images both coronal and axial planes with a 1-3-mm slice thickness. Out of the CT scans studied of the nose and paranasal sinus of 462 patients, the prevalen Results : ce of concha bullosa was 25.5 % (118) patients .Male predominance was seen with 63 (53.3%) patients and 55 (46.6%) female patients. Concha bullosa was bilateral in 21 (17.7%) patients, and unilateral in 76 (64.4 %) patients. Mixed or extensive type of concha bullosa was seen in 56 (47.4%) patients followed by 35 (29.7%) patients having lamellar type and 27 (22.9%) patients with bulbous type.Out of 118 cases of CB, 43 (36.4%) were on left side of which 29 (67.4%) patients showed deviation of the nasal septum to right and 33 (27.9%) were on right side of which 21 (63.3%) patients had a nasal septal deviation to left. We found that there is a strong relationship between the presence of unila Conclusion : teral or dominant Concha bullosa and contralateral nasal deviation.