label: Sinonasal Papilloma
label_lc: sinonasal papilloma
description: A benign neoplasm that arises from the ciliated respiratory mucosa that lines the nasal cavity and paranasal sinuses.  It is classified as inverted papilloma, oncocytic papilloma, and exophytic papilloma. Clinical manifestations include nasal obstruction, epistaxis, and anosmia.