All of the following are FALSE about salivary gland neoplasms EXCEPT:
A. Account for less than 2% of all head and neck neoplasmsTumors of the salivary gland are relatively uncommon and represent less than 2% of all head and neck neoplasms. About 85% of salivary gland neoplasms arise within the parotid gland. The majority of these neoplasms are benign, with the most common histology being pleomorphic adenoma (benign mixed tumor). In contrast, approximately 50% of tumors arising in the submandibular and sublingual glands are malignant. Tumors arising from minor salivary gland tissue carry an even higher risk for malignancy (75%). Diagnostic imaging is standard for the evaluation of salivary gland tumors. Magnetic resonance imaging (MRI) is the most sensitive study to determine soft-tissue extension and involvement of adjacent structures. Benign epithelial tumors include pleomorphic adenoma (80%), monomorphic adenoma, Warthin tumor, oncocytoma, or sebaceous neoplasm.