Malignant Sphenoid Sinus Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A primary or metastatic malignant neoplasm involving the sphenoid sinus.

**Synonyms:** - Malignant Neoplasm of Sphenoid Sinus - Malignant Neoplasm of Sphenoidal Sinus - Malignant Neoplasm of the Sphenoid Sinus - Malignant Neoplasm of the Sphenoidal Sinus - Malignant Sphenoid Sinus Tumor - Malignant Sphenoidal Sinus Neoplasm - Malignant Sphenoidal Sinus Tumor - Malignant Tumor of Sphenoid Sinus - Malignant Tumor of Sphenoidal Sinus - Malignant Tumor of the Sphenoid Sinus - Malignant Tumor of the Sphenoidal Sinus - Malignant neoplasm of sphenoid sinus