sublingual epidermoid cyst: a case report

the occurrence of epidermoid and dermoid cysts in the oral cavity is extremely rare accounting 0.01% of all cysts. in our case report we hereby present a large epidermoid cyst in the floor of mouth imitating a plunging ranula. a 26-year-old female reported to us with a complaint of a swelling below the tongue since 2 year. on examination there was a swelling in the left side of the floor of the mouth, with anextra oral component in the submental area, the patient underwent surgical removal of the mass under local anaesthesia. diagnosis of an epidermoid cyst was confirmed by the histopathological report.