Introduction: The etiology and pathophysiology of sinonasal masses are still unknown though significant knowledge has been obtained about nasal physiology and nasal masses with scientific advances in the fields of radiology, microbiology, and immunology. Aims: To find out the incidence of sinonasal masses among the patients attending our ENT opd and establish the etiology of different sinonasal masses by clinical, radiological & histopathological examination. The study also aims at finding the clinical & histopathological examination(HPE) correlation of the excised sinonasal masses. Methods: 50 patients presenting with sinonasal mass were evaluated clinically, endoscopically and radiologically(CT Scan). All the patients after evaluation were operated followed by HPE and its correlation with CT Scan findings was calculated. Conclusion: Both nasal endoscopy and CT scan are objective measures that can increase accuracy of diagnosis in nasal pathologies. For areas that are not accessible to nasal endoscopy, CT scan can be useful in identifying disease and its extension. It is concluded that the diagnosis can be often be missed on either clinical or radiological evaluation and thus histopathological evaluation should be done in all cases of sinonasal masses for accurate diagnosis and management.