Benign Ethmoid Sinus Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A neoplasm that arises from the ethmoid sinus and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.

**Synonyms:** - Benign Ethmoid Sinus Tumor - Benign Ethmoidal Sinus Neoplasm - Benign Ethmoidal Sinus Tumor - Benign Neoplasm of Ethmoid Sinus - Benign Neoplasm of Ethmoidal Sinus - Benign Neoplasm of the Ethmoid Sinus - Benign Neoplasm of the Ethmoidal Sinus - Benign Tumor of Ethmoid Sinus - Benign Tumor of Ethmoidal Sinus - Benign Tumor of the Ethmoid Sinus - Benign Tumor of the Ethmoidal Sinus