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A case of neglected inverted papilloma with invasion to the skin

¹ Otorhinolaryngology Department, Imam Reza Educational Hospital, Mashhad University of Medical Sciences, Mashhad, Iran; ² Maxillofacial Radiology Department, Mashhad Dental School, Mashhad, Iran; ³ Pathology Department, Imam Reza Educational Hospital, Mashhad University of Medical Sciences, Mashhad, Iran; ⁴ Otorhinolaryngology Department, Imam Reza Educational Hospital, Mashhad University of Medical Sciences, Mashhad, Iran

*Correspondence to: Mehdi Bakhshaee, MD, Otorhinolaryngology Department, Imam Reza Educational Hospital, Mashhad University of Medical Sciences, Mashhad, Iran; Email: m-bakhshaee{at}mums.ac.ir

Received 19 December 2005; revised 10 May 2006; accepted 25 May 2006

Inverted papilloma is an uncommon and locally aggressive benign tumour of the sinonasal region, which tends to recur after surgical resection and is occasionally associated with squamous cell carcinoma. The following report describes the initial history, physical examination, radiological studies, operative and histopathologic reports and differential diagnosis of a case of inverted papilloma with wide extension into the adjacent structures and unique clinical appearance.

Keywords: paranasal sinus; benign tumour; sinonasal papilloma; inverted papilloma