Benign Sphenoid Sinus Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A neoplasm that arises from the sphenoid 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 Neoplasm of Sphenoid Sinus - Benign Neoplasm of Sphenoidal Sinus - Benign Neoplasm of the Sphenoid Sinus - Benign Neoplasm of the Sphenoidal Sinus - Benign Sphenoid Sinus Tumor - Benign Sphenoidal Sinus Neoplasm - Benign Sphenoidal Sinus Tumor - Benign Tumor of Sphenoid Sinus - Benign Tumor of Sphenoidal Sinus - Benign Tumor of the Sphenoid Sinus - Benign Tumor of the Sphenoidal Sinus