Cancer risk in chronic rhinosinusitis: a propensity score matched case-control cohort study.

Background: Chronic rhinosinusitis (CRS) have infection, innate immune disorder and chronic inflammation problems which are considered as potential mechanism of tumorigenesis. To estimate cancer risk in CRS using propensity scores matching (PSM) case-control cohort study.

Methods: A nationwide retrospective case-control cohort study is conducted on claim data from National Health Insurance Research Database in Taiwan.