Dermoid cyst of the mandible: Report of a case.

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Dermoid cyst is a developmental anomaly which arises from inclusions of displaced embryonal epithelium. It usually appears in the soft tissue and is of extremely infrequent occurrence in the bone.This report describes a case of dermoid cyst which arises in the mandible of 4 year-old male. The patient visited another hospital complaining of inflammatory swelling of the face. Radiographic examination revealed multilocular radiolucent area in the mandible and the patient was referred to us for further examination. Following marsupialization, the cyst was surgically removed under general anesthesia. The cyst was histologically composed of highly keratinized squamous epithelium and adnexal skin structures; sebaceous glands and hair follicles The cyst appeared in a very low-aged patient and had no relation with dental follicles. From these findings, the final diagnosis of true intraosseous dermoid cyst in the mandible was made.
社団法人日本口腔外科学会の論文