Inverted Papilloma Completely Obstructing Anterior Nasal Orifice.

Sinonasal inverted papilloma is a benign lesion that occurs in the nasal cavity and paranasal sinuses. Fungiform papillomas have been described as arising from the septum or the nasal vestibule, while inverted and cylindrical papillomas have been characterized as developing from an attachment site on the lateral nasal wall or a mucosal surface in the paranasal sinuses. Here, we present a rare case of an inverted papilloma that completely obstructed the anterior nasal orifice.