No abstract

No abstract

No abstract

Purpose: To report a rare case of intraosseous lipoma of the mandible and to discuss the most important features of the lesion, emphasizing the diagnostic pitfall that this entity may represent for general dentists and radiologists.Case description: An 18-year-old male patient presented an asymptomatic radiolucent lesion in the mandible in the region of the teeth 43 and 44 with no clinical alteration. After the incisional biopsy the histopathological exam revealed a capsulated lesion predominantly composed of mature adipose tissue and some areas of dystrophic calcification confirming the diagnosis of intraosseous lipoma. The lesion was surgically removed and no signs of recurrence could be observed after six months of follow-up.Conclusion: Due to the unspecific clinical and radiographic features and its rarity the intraosseous lipoma of the mandible may be a diagnostic challenge for general dentists and radiologists. Therefore, the histopathological examination is required for the correct diagnosis of the lesion.Key words: Bone Tumors; diagnosis; lipoma; mandible ResumoObjetivo: Relatar um caso raro de lipoma intra-ósseo em mandíbula e discutir os aspectos mais importantes desta lesão, enfatizando a desafio diagnóstico que esta entidade pode representar para cirurgiões dentistas e radiologistas.Descrição do caso: Paciente do sexo masculino, 18 anos de idade apresentava uma lesão radiolúcida assintomática na mandíbula na região dos dentes 43 e 44 sem qualquer alteração clínica. Após a biópsia incisional, o exame histopatológico evidenciou uma lesão encapsulada composta majoritariamente por tecido adiposo benigno e algumas áreas de calcificações distróficas confirmando o diagnóstico de lipoma intra-ósseo. A lesão foi cirurgicamente removida e nenhum sinal de recorrência foi observado após seis meses de acompanhamento.Conclusão: Devido às características clínicas e radiográficas inespecíficas e à sua raridade, o lipoma intra-ósseo de mandíbula pode representar um desafio diagnóstico para cirurgiões dentistas e radiologistas. Portanto, o exame histopatológico é fundamental para o correto diagnóstico da lesão.

The calcifying odontogenic cystic tumor (CCOT) is a benign lesion of odontogenic origin characterized by an ameloblastoma-like epithelium with ghost cells that may calcify. Despite broadly considered as a cyst, some investigators prefer to classify it as a neoplasm. Clinically, it occurs predominantly during the third decade of life. No difference in gender prevalence has been observed nor predilection of the lesion between maxilla and mandible. The most affected region extends from the incisor tooth to bicuspids. The classic treatment of the lesion is full excision, although a different approach may be determined by the possible association with another odontogenic tumor. Depending on the tumor size and the vicinity with important structures, decompression may be undertaken before its complete removal. The present report describes a case of CCOT with large proportions, located at the right maxilla and extending to the maxillary sinus, nasal cavity, and orbital floor. The treatment option was surgical decompression as the initial procedure, with satisfactory outcome. After partial remission, the lesion was fully removed, and the post-operative follow-up was uneventful.