Rare Presentation of Bilateral Sino-Nasal Inverted Papilloma

Abstract

Introduction: The inverted papilloma ( IP ) is a rare and benign sinonasal tumour, bearing an incidence of 0.75-1.5 cases per 100 thousand inhabitants/ year( representing 0.5-4%) of nasal tumours and 91- 99% of cases are unilateral .IP is locally aggressive tumour having propensity for recurrence and association with malignancy , We Report a rare case of inverted papilloma in bilateral nasal cavity . Case Report: A 54 Years old man presenting with history of bilateral nasal obstruction. CT scan Nose and PNS revealed soft tissue density mass in bilateral nasal cavity, Intra-operative bilateral ethmoid sinuses , Lt. maxillary , Lt. sphenoid sinus were found involved, Total removal was done endoscopically , On the basis of clinic-pathological findings , The tumour was diagnosed as inverted papilloma , On follow up patient was disease free . Conclusion: The very rarity with which inverted papillomas affect the nasal cavities (bilateral) makes this report so important, especially considering post-operative follow up