Multiple synchronous bilateral Warthin's tumors of the parotid glands with pleomorphic adenoma. Case report and review of the literature.

A case of multiple bilateral synchronous Warthin's tumors of the parotid glands with a simultaneous pleomorphic salivary adenoma in one patient is presented. This case appears to be unique. Only three previous cases of multiple synchronous bilateral Warthin's tumors have been reported. The occurrence of salivary tumors of different histologic types in the same patient is also rare. Twenty cases of Warthin's tumor that occurred with pleomorphic salivary adenoma were found in our review of the literature. However, none of these represented synchronous bilateral multiple Warthin's tumors.