NCIt related terms : Schneiderian papilloma, inverted;
NCIt definition : A benign neoplasm that arises from the ciliated respiratory mucosa that lines the
nasal cavity or paranasal sinuses. It results from the invagination and proliferation
of epithelial cells in the underlying stroma. Clinical manifestations include nasal
obstruction, epistaxis, and anosmia. It has the tendency to recur and extend to adjacent
structures. Inverted papillomas are occasionally associated with the development or
presence of carcinomas, usually squamous cell carcinomas.;