Ethmoid Sinus Polyp

**Semantic type:** Disease or Syndrome

**Definition:** A polyp that arises from the ethmoid 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:** - Ethmoidal Polyp - Ethmoidal Sinus Polyp - Polyp of Ethmoid Sinus - Polyp of Ethmoidal Sinus - Polyp of the Ethmoid Sinus - Polyp of the Ethmoidal Sinus