A case of a sublingual type of dermoid cyst

Abstract

We report a case of a sublingual type of dermoid cyst on the floor of the mouth. A 19-year-old man was referred to our ENT clinic because of a swelling of the submental region. It was clinically difficult to differentiate from a thyroglossal duct cyst by using a diagnostic imaging method. We performed surgical resection using a submental approach.
Imaging modalities such as CT, MRI and ultrasonography are useful for diagnosing cystic lesions in the cervical region. However, it has not been easy to make a definitive diagnosis because some cases do not demonstrate typical imaging findings. In our case, it was diagnosed histopathologically as a dermoid cyst.