%A Zhai Xiaojing,Cao Shi,Xin Wenlong,Cao Shan,Zhang Hao %T Pleomorphic adenoma with extensive keratin cysts: a case report %0 Journal Article %D 2022 %J Int J Stomatol %R 10.7518/gjkq.2022046 %P 328-331 %V 49 %N 3 %U {https://www.gjkqyxzz.cn/CN/abstract/article_13867.shtml} %8 2022-05-01 %X

Pleomorphic adenoma, which has a diverse histology, is the most common benign tumor in the salivary glands. About 25% of pleomorphic adenoma is associated with squamous metaplasia, while cases with extensive squamous metaplasia and keratin cysts are unusual. Thus, there is a need to differentiate this from other cystic lesions, squamous cell carcinoma, mucoepidermoid carcinoma. In this work, we reported a case characterized by extensive keratin cyst formations. Squamous metaplasia and keratin cyst components account for about 40% of pleomorphic adenomas. Finally, through a literature review, we summarized the clinicopathological features, imaging examinations, differential diagnoses, treatments, and prognosis of pleomorphic adenoma with extensive keratin cysts.