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Dermoid cyst of floor of mouth

Case contributed by Varun Babu
Diagnosis certain

Presentation

A 13 year old child developed fever and headache. Her parents noticed a swelling below the jaw and visited the physician. Clinically a cystic midline swelling moving with deglutition was palpable in the submental region with suspicious extension into sublingual space. An MRI and fine needle cytology were requested.

Patient Data

Age: 13 years
Gender: Female

Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.

MRI plain and contrast of the head and neck revealed a T1 and T2 bright midline lesion in the submental region extending into the sublingual space which is fat suppressed and does not reveal any enhancement. A differential of dermoid/epidermoid was suggested. 

Case Discussion

Excision of the lesion confirmed a diagnosis of Dermoid cyst of the floor of mouth.

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