| Health / Medical Topics |
Paranasal Sinus Inverted Papilloma
A benign neoplasm that arises from the ciliated respiratory mucosa that lines the paranasal sinuses. It results from the invagination and proliferation of epithelial cells in the underlying stroma. (NCI Thesaurus)
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A malignant epithelial neoplasm arising in the paranasal sinus.
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