BACKGROUND: In any ENT outpatient clinic, patients presenting with nasal symptoms like nasal obstruction, nasal discharge, smell disorders, headache, nasal bleeding is very common. During routine ENT examination even after a thorough history and careful conventional anterior and posterior rhinoscopy examinations, it is not uncommon to misss some of the important findings. Now a days all the patients after meticulous rhinoscopy are subjected for diagnostic nasal endoscopy and CT Scan which help in better diagnosis and better treatment. Studies have been undertaken to know the efficacy of diagnostic nasal endoscopy and CT Scan in arriving to a correct diagnosis. AIM: In our study an attempt has been made to compare the results of rhinoscopy, diagnostic nasal endoscopy and CT Scan and to know which is more conclusive for correct diagnosis and to compare our observations with the available literature. MATERIAL AND METHODS: 60 patients( 22 males and 38 females) of age group 15 to 52 years complaining of nasal symptoms underwent thorough conventional rhinoscopy, diagnostic nasal endoscopy and CT Scan and the all the findings were recorded. The results were compared and analysed. CONCLUSION: In our present study CT Scan was found to be more superior to diagnostic nasal endoscopy in the diagnosis of sinusitis and concha bullosa. Diagnostic nasal endoscopy was better than CT Scan in diagnosing deviated nasal septum, septal spur, nasal polypi, hypertrophied turbinates, and rhinosporidiosis. Our observations were consistent with the results of majority of available literature.