Histologic heterogeneity and syndromic associations of non-ampullary duodenal polyps and superficial mucosal lesions

Duodenal polyps and superficial mucosal lesions (DP/SMLs) are poorly characterised.To describe a series of endoscopically-diagnosed extra-ampullary DPs/SMLs.This is a retrospective study conducted in a tertiary referral Endoscopy Unit, including patients who had DPs or SMLs that were biopsied or removed in 2010-2019. Age, gender, history of familial polyposis syndromes, DP/SML characteristics were recorded. Histopathological, immunohistochemical...