NCIt synonyms : Malignant Sphenoid Sinus Tumor; Malignant Sphenoidal Sinus Neoplasm; Malignant Tumor of the Sphenoidal Sinus; Malignant Neoplasm of the Sphenoidal Sinus; Malignant Tumor of the Sphenoid Sinus; Malignant Tumor of Sphenoid Sinus; Malignant Sphenoidal Sinus Tumor; Malignant Neoplasm of Sphenoid Sinus; Malignant Tumor of Sphenoidal Sinus; Malignant Neoplasm of Sphenoidal Sinus; Malignant Neoplasm of the Sphenoid Sinus;
NCIt definition : A primary or metastatic malignant neoplasm involving the sphenoid sinus.;