Malignant Frontal Sinus Neoplasm

**Semantic type:** Neoplastic Process

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

**Synonyms:** - Malignant Frontal Sinus Tumor - Malignant Neoplasm of Frontal Sinus - Malignant Neoplasm of the Frontal Sinus - Malignant Tumor of Frontal Sinus - Malignant Tumor of the Frontal Sinus - Malignant neoplasm of frontal sinus