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Avances en Odontoestomatología

Print version ISSN 0213-1285


ANTUNES FREITAS, D.; VERGARA HERNANDEZ, C.I.; DIAZ CABALLERO, A.  and  MOREIRA, G.. Pathological mandibular fracture due to intraosseous plasmacytoma. Av Odontoestomatol [online]. 2012, vol.28, n.3, pp.119-124. ISSN 0213-1285.

Plasma cell tumors are subclassified into: Solitary plasmacytoma of bone, multiple myeloma and extramedullary plasmacytoma. 80% of the latter affects the region of the head and neck soft tissue arising in the upper respiratory duct and rarely in the oral cavity. The search for a systemic disease is important in cases where the diagnosis is made. A case of a patient, a man of 73 years of age, residing in the rural village of Great Mogol, Minas Gerais (Brazil), Computed tomography showed irregular osteolytic hypodensity and resorption at the base of the left mandibular alveolar ridge. The lesion measuring 38.0 mm × 19.0 mm × 15.0 mm. On CT clearly shows the presence of pathological fracture of the left side. Needle aspiration was performed, where blood was obtained. Incisional biopsy was performed. The presumptive diagnosis was ameloblastoma. The biopsy specimen was sent for analysis anatomohistopatológica. Microscopy showed tumor cells composed of monomorphic cells with oval nuclei, large peripheral and eccentric, prominent nucleoli and basophilic cytoplasm, surrounded by scant stroma and infiltration of cancellous bone. The urine test was conducted specifically for the Bence-Jones protein, which was negative. The skull and chest radiographs were performed and showed no changes. He then completed a diagnosis of solitary plasmacytoma of the jaw. The patient is undergoing radiotherapy at the Oncology Department of Santa Casa de Misericordia. The patient had severe mucositis and changes in facial color as a result of radiotherapy.

Keywords : Bone plasmacytoma; mandible; pathological fracture.

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