Fibrous Epulis: A Case Report of Benign Gingival Mass with Unusual Histology (Calcification and Cartilaginous Metaplasia)

The epulis is a benign lesion which originates from the gingiva and are often benign and which has no potential for deterioration. A 13-year-old-girl was referred to our clinic for a mass on gingiva, precisely in the anterior maxillary alveolar ridge, that the patient first noticed 15 months ago. The mass gradually increased in size over time. The mass was relatively mobile, the surface was erythematous and evoked little pain when palpated. It had a relatively thin pedicle which is why it was resected under local anesthesia, allowing a complete removal of the mass. The histological examination showed a cellular fibrous proliferation and multiple foci of calcification and focal area of cartilaginous metaplasia. Surface epithelium was denuded, revealing ulceration and granulation tissue formation. We here report this case of fibrous epulis with metaplastic change in order to give a useful example that could help in the differential diagnosis of the lesions located in the oral cavity.