Myoepitheliomas and malignant myoepitheliomas were considered a variant of pleomorphic adenomas until 1991. However, these are also found in breast and bronchus and have gained recognition as separate entities. They account for less than 1% of salivary gland tumors, only rarely undergo malignant transformation (0.2-0.45% of all malignant salivary gland tumors).

Age of presentation ranges from 20-60 years of age, and parotid gland and accessory salivary glands are the main sites of occurrence.

Imaging appearance is essentially the same as pleomorphic adenomas.

Article information

rID: 1709
System: Head & Neck
Synonyms or Alternate Spellings:

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