A 52-year-old man with the looseness of the right second upper premolar tooth presented to the dental clinic. A dentist advised him extraction of the tooth, which resulted in an oroantral fistula. On examination, there was a firm tender swelling in the right upper neck. Past Medical History (PMH): The elderly male had right-sided progressively increasing nasal obstruction six months ago. It was followed by a blood-tinged nasal discharge from the right side.

What is your most likely diagnosis for this patient? (Answer is posted in the comment section below!) *This Case Challenge is from the Editorial Team of Docplexus and is meant for educational purposes only. ##Disclaimer## The content provided on Docplexus is intended for educational purposes only. While we strive to ensure its accuracy, we make no warranties, explicit or implied, about the suitability, reliability, or adequacy of the…