Surgery>>>>>Disorders of the Head and Neck
Question 5#

All of the following are FALSE about salivary gland neoplasms EXCEPT:

a. Account for less than 2% of all head and neck neoplasms
b. If in minor salivary glands, less likely to be malignant than if in the parotid gland
c. Computed tomography (CT) scanning is more accurate than magnetic resonance imaging (MRI) in detecting lesions
d. Oncocytomas are usually malignant

Correct Answer is A


Tumors 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.