Abstract
Inverted papilloma (IP) is a rare type of benign papilloma that arises in the mucosa of the nasal cavity and the paranasal sinuses. It is locally aggressive, causing bone destruction and has a recurrence rate of approximately 20% after excision. 1 Bielamowicz S Calcaterra TC Watson D Inverting papilloma of the head and neck: The UCLA update. Otolaryngol Head Neck Surg. 1993; 109: 71 PubMed Google Scholar It has been reported that approximately 5% of these tumors undergo malignant transformation. 2 Lowson W Ho BT Shaari CM et al. Inverted papilloma: A report of 112 cases. Laryngoscope. 1995; 105: 282 Crossref PubMed Scopus (266) Google Scholar Therefore, they are generally treated according to malignant tumor principles.
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