Tumor marrom bilateral do hiperparatiroidismo primário em mandíbula: relato de caso / Bilateral brown tumor of primary hyperparathyroidism in the mandible: case report

OBJETIVOS: Apresentar um caso de envolvimento mandibular bilateral por tumor marrom do hiperparatireoidismo primário e discutir a diferenciação do tumor marrom do hiperparatireoidismo com a lesão central de células gigantes. DISCUSSÃO E CONCLUSÃO: A diferenciação é estabelecida pela confirmação do distúrbio endócrino, fator determinante no tratamento do tumor. O tratamento foi a resolução da endocrinopatia pela exérese de adenoma nas glândulas paratireoide.

OBJECTIVES: To presente a cased of bilateral mandibular involvement by a brown tumor of hyperparathyreoidism,in which the treatment consisted in resolution of the endocrinopathy by neoplasm exeresis from the parathyroid glands. DISCUSSION AND CONCLUSION: The correct differentiation of the hyperparathyroidism brown tumor from the central giant cell lesion is an essential factor to avoid diagnostic errors and unnecessary treatments.This differentiation is established by the confirmation of endocrinal disturbance, a determinant factor in the treatment of the tumor.

Management of Giant Cell Tumour : a Nigerian Experience

Giant cell tumours (GCT) are the commonest bone tumours worldwide. It is rarely malignant but when it does it progresses to fibrosarcoma with high mortality. Otherwise it causes poor cosmesis; disability and pathological fractures. A total of 19 cases of histologically established Giant cell tumour of the bone were reviewed prospectively in a 5 year study. 14 cases were benign; 4 malignant and one was a malignant transformation. Lesions around the knee accounted for 42.2of the cases; but the radius was the commonest single bone affected with 26.3. Eleven patients had curettage; five of them had autogenous bone grafting while the remaining six had bone grafting and plate augmentation. One patient had fore-quarter amputation while seven had tumour resection. There was no recurrence recorded among those that had currretage and autogenous bone grafting. 33of those that had curettage and bone cementing as well as 16.6of those that had resection presented with recurrence. One patient died within 3 months of surgery due to metastasis to the lungs; liver and spleen. Mean follow up was 9.2 months (range of 2 to 60 months). With early presentation; curretage and bone grafting is often effective; late presentation however has an increased risk of recurrence due to soft tissue involvement; dearth of investigative tools and financial constraints

Tumor marrón del hiperparatiroidismo. A propósito de un caso / Maroon tumor of hyperparathyroidism. Apropos of a case

El tumor marrón del hiperparatiroidismo en los maxilares es poco frecuente. Se reporta 1 caso de una paciente tratada quirúrgicamente por lesión osteolítica maxilar. Se describen los antecedentes, la clínica y diferentes exámenes de valor diagnóstico. Se realizó diagnóstico diferencial con el tumor central de células gigantes. Se revisó el tema y se brindaron algunas consideraciones reportadas en la literatura(AU)

The maroon tumor of hyperparathyroidism is a rare tumor. The case of a female patient surgically treated due a maxillary osteolytic lesion was reported. The history, clinic and different examinations of diagnostic value are described.. A differential diagnosis was made with the central tumor of giant cells. The topic was reviewed and some considerations reported in literature were made(AU)

Tumor de células gigantes / Giant cell tumor

O tumor de células gigantes do osso é uma neoplasia de malignidade indeterminada que com frequência cursa com recidiva e, em raras ocasiões, pode evoluir com metástases ou para forma poliostótica...O índice de proliferação celular não identificou outras formas evolutivas do tumor de células gigantes. Os resultados do presente estudo nos permitiu concluir que a avaliação do índice de proliferação celular através do antígeno nuclear de proliferação celular é um método limitado na definição do prognóstico do tumor de células gigantes. O tipo de evolução do tumor de células gigantes parece estar diretamente relacionado com o tipo de tratamento empregado.