Salivary gland cancer is a rare malignancy that arises in the salivary glands—primarily the parotid (majority of cases), submandibular, sublingual, and minor salivary glands located throughout the oral cavity and upper aerodigestive tract. It accounts for approximately 3–6% of all head and neck cancers. Histologic subtypes include mucoepidermoid carcinoma (most common), adenoid...