Maxillary Sinus Polyp

**Semantic type:** Disease or Syndrome

**Definition:** A polyp that arises from the maxillary sinus mucosa. It is characterized by the presence of edematous tissue infiltrated by inflammatory cells, including eosinophils. Causes include allergic rhinitis, chronic sinusitis, and cystic fibrosis.

**Synonyms:** - Maxillary Antral Polyp - Polyp of Maxillary Sinus - Polyp of the Maxillary Sinus