Adenosquamous carcinoma ex pleomorphic adenoma of the hard palate

초록

carcinoma ex pleomorphic aadenoma of salivary gland is an uncommon neoplasm, constituting approximately 3.6% of all salivary gland tumors and 3-5% of all pleomorphic adenomas. The carcinoma which develops in a pleomorphic adenoma is most frequently and adencarcinoma and second most common is undifferentiated carcinoma. Less frequently the maignancy will be squamous cell carcinoma, mucoepidermoid carcinoma, adenoid cystic carcinoma, polymophous low grade carcinoma, and myoepithelioma. However, adenosquamous carcioma arising from pleomorphic adenoma has not been reported yet. We report a case osf adenosquamous carcinoma developed in a pleomorphic adenoma.