Pleomorphic adenoma of soft palate with extensive squamous metaplasia – A diagnostic enigma

Abstract

Pleomorphic adenoma is the most common salivary gland tumor. It can have a wide range of morphological spectrum. But extensive squamous metaplasia mimicking squamous cell carcinoma is quite uncommon. Palate is a common site for minor salivary gland tumor. Less than hundred cases of pleomorphic adenoma with extensive squamous metaplasia have been reported in English literature, thus making it a rare entity. A 60-year old female presented with a well-defined swelling in the soft palate. The histology was reported as pleomorphic adenoma of soft palate with extensive squamous metaplasia and focal adipocytic metaplasia. The histopathological identification of this entity is important as it can mimic malignancy, particularly squamous cell carcinoma. Correct diagnosis helps in unnecessary aggressive therapy.

Keywords

• minor salivary gland tumor
• pleomorphic adenoma
• soft palate
• squamous metaplasia