Sinonasal Papillomas: 10-Year Retrospective Analysis of Etiology, Epidemiology, and Recurrence.

Objectives: To examine the epidemiology, subtypes, trends over time, and predictive factors for recurrence and malignant transformation of sinonasal papillomas.

Methods: A retrospective chart review of 118 patients with sinonasal papillomas from 2009 to 2019 was conducted at the University of California, Los Angeles. This study is a follow-up to a previously published study from 2000 to 2009 at the same academic center.