Maxillary Sinus Inverted Papilloma

**Semantic type:** Neoplastic Process

**Definition:** A benign neoplasm that arises from the ciliated respiratory mucosa that lines the maxillary sinus. It results from the invagination and proliferation of epithelial cells in the underlying stroma.

**Synonyms:** - Inverted Papilloma of Maxillary Sinus - Inverted Papilloma of the Maxillary Sinus - Maxillary Sinus Inverted Schneiderian Papilloma