Dermoid cyst of the oral cavity: A case report

Introduction. Dermoid cysts are benign developmental skin growths that can occur in any part of the body. Dermoid cysts of the head and neck account for 7% of all cysts, and are most frequently located near the lateral aspect of the eyebrow. They are rarely found in the oral cavity, accounting for 0.01% of all oral cavity cysts. Case Report. A 15-years-old patient was referred to our Clinic due to a growth in the mouth. Clinical examination and magnetic resonance imaging showed a clearly demarcated, oval, cystic growth in the midline sublingual region. Intraoral incision, typical for frenectomy, with cyst excision was performed. Histopathological findings suggested a dermoid cyst. Conclusion. Dermoid cysts of the oral cavity are very rare; they grow slowly and when they reach certain dimensions, they interfere with chewing, swallowing, and lead to progressive breathing difficulty. Dermoid cysts should be included in the differential diagnosis of sublingual mass. Magnetic resonance imaging provides complete information about the localization, size, and content of the growth and contributes significantly to the decision on the surgical approach.