Adenocarcinomas of the sinonasal tract may originate from respiratory surface epithelium or the underlying seromucinous glands. These malignancies are divided into salivary-type adenocarcinomas and non-salivary-type adenocarcinomas. The latter are further divided into intestinal-type and nonintestinal-type adenocarcinomas. This review provides an update on tumor classification, differential diagnostic considerations and molecular features, as well as new adenocarcinoma entities in the sinonasal area.
Keywords: Immunohistochemistry; Intestinal-type adenocarcinoma; Molecular pathology; Nonintestinal-type adenocarcinoma; Salivary-type adenocarcinoma; Sinonasal adenocarcinoma; Wood dust exposure.