Most definitive diagnostic of sinusitis is:: (A) X-ray PNS, (B) Proof puncture, (C) Nasal endoscopy, (D) Transillumination test
Answer is C. Nasal endoscopy is the most definitive diagnostic of sinusitis. It is done to see the various sinus meatuses, mucopus or any other pathology. If mucopus is seen in the meatus, it is confirmatory of sinusitis.