Papiloma oncocítico malignizado: Una variante infrecuente de papiloma nasosinusual

: Oncocytic scheneiderian papilloma (OSP), or cylindrical cell papilloma, is the less frequent of the three morphologically distinct papillomas occurring in the nose and paranasal sinuses. We report a case of a patient with an OSP and review on the diagnostic and prognostic implications of this type of tumor.