Abstract
In the oral region, dermoid and epidermoid cysts usually occur in the floor of the mouth and rarely arise in other sites. We report a very rare case of epidermoid cyst in the pterygomandibular space.The patient was a 67-year-old man who was referred for examination of an asymptomatic swelling in the right oropharynx. MRI revealed a multilocular cystic lesion in the pterygomandibular space. The clinical diagnosis was a cyst, and the lesion was enucleated by an intraoral approach with the patient under general anesthesia. Histopathologically, the cyst wall was lined by a thin layer of keratinizing squamous epithelium and fibrous connective tissue with no skin appendages. It was diagnosed as an epidermoid cyst.
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