Gray scale and Doppler ultrasonography of the benign tumors of parotid gland (pleomorphic adenoma and Warthin's tumor). Pictorial essay.

The purpose of this pictorial essay is to illustrate the ultrasonographic aspects of the most common benign tumors of the parotid gland: pleomorphic adenoma and Warthin's tumor. The gray scale and Doppler ultrasonographic findings of the two tumors are reviewed and exemplified.