2010 Volume 30 Issue 2 Pages 156-160
We report a case of sublingual dermoid cyst which painlessly enlarged to a diameter of over 50 mm. A 29-year-old woman was noted to have a swelling of the mouth floor during treatment at a local dental clinic, and was referred to our department on June 18, 2009. On initial examination, a painless, elastic, soft swelling of the mouth floor was noted, presenting with the appearance of a double tongue. Intercuspation was possible, and tongue movement, articulation, and eating were not impaired. The patient experienced dyspnea at bedtime. T2-weighted MRI revealed a 50×30×30- mm oval, well-defined, cystic lesion with a strongly hyperintense border and heterogeneously hypointense interior. She underwent intraoral cystectomy under general anesthesia on September 4, 2009. Tracheal intubation and sedation were maintained because of the fear that postoperative airway stenosis might develop due to swelling of the oral floor, and the patient was followed-up. It was histopathologically diagnosed as a dermoid cyst.
