Sublingual Epidermoidal Cyst In A 73-Year-Old

The image on the left shows the axial view, and the image on the right the sagittal view
  • Sublingual epidermoidal cyst is a benign, slow growing and painless sac-like pouch.
  • It can be located in the submandibular, sublingual and submental region.
  • The cyst can cause symptoms of dysphagia and dyspnea.
  • Treatment of choice is surgical excision.

A 73-year-old female patient reported to the emergency department with complaint of difficulty speaking. She further stated that the difficulty she had while speaking had worsened over the course of 4 days. Moreover, according to her medical history, she underwent a dental procedure 2 months earlier. The procedure involved inserting a bridge because of a missing tooth.

Physical examination of the patient showed a large painless and fluctuant swelling on the anterior floor of the mouth. There was no evidence of palpable cervical lymph nodes or purulent drainage at the orifices of the submandibular and sublingual ducts. For further evaluation, computed tomography of the neck with contrast material was performed, which showed a well-defined midline and suprahyoid cyst that measured 7 cm by 4 cm by 3.5 cm. The cyst was located above the mylohyoid and geniohyoid muscles.

The lesions also had peripheral enhancement with multiple discrete foci of hypoattenuation that indicated a coalescence of small, fatty nodules. The findings were consistent with the diagnosis of epidermoidal cyst.

Epidermoidal cyst

Epidermoid cysts are benign cysts that are filled with keratin. The cysts are most commonly located on the trunk, neck and face. However, in some cases, can also be present within the floor of the mouth. The cyst of the patient was surgically excised with an intraoral approach. The patient reported a complete resolution of symptoms at follow-up.


Thibouw, F., & Schein, A. (2020). A Sublingual Epidermoid Cyst. New England Journal of Medicine382(7), 655-655.

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Dr. Aiman Shahab is a dentist with a bachelor’s degree from Dow University of Health Sciences. She is an experienced freelance writer with a demonstrated history of working in the health industry. Skilled in general dentistry, she is currently working as an associate dentist at a private dental clinic in Karachi, freelance content writer and as a part time science instructor with Little Medical School. She has also been an ambassador for PDC in the past from the year 2016 – 2018, and her responsibilities included acting as a representative and volunteer for PDC with an intention to make the dental community of Pakistan more connected and to work for benefiting the underprivileged. When she’s not working, you’ll either find her reading or aimlessly walking around for the sake of exploring. Her future plans include getting a master’s degree in maxillofacial and oral surgery, settled in a metropolitan city of North America.


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