Summary

Sinonasal inverted papilloma (IP) is a benign but destructive tumor originating from the ciliated respiratory mucosa of the sinonasal tract. It can be associated with malignancy (squamous cell histology, in particular) and human papillomavirus infection has been investigated as a potential etiological factor linked to malignant alterations of IP. Surgery is the treatment of choice for IP, however, radiotherapy as an adjunct to surgery is indicated for IP with associated malignancy.

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