Imaging features of sublingual dermoid cysts: a report of four cases

Dermoid cysts of the floor of the mouth are rare lesions presumed to be caused by entrapment of germinal epithelium during the closure of the mandibular and hyoid branchial arches. They usually manifest as nonpainful swelling. Developmental cysts are histopathologically classified into 3 types: epidermoid, dermoid, and teratoid. An ultrasound scan is commonly used as the first choice to investigate a lesion. Other imaging methods, such as the US, CT, and MRI, are used for differential diagnosis. This article's aim is to present the imaging findings of 4 cases of sublingual dermoid cysts and to review the literature.