RESUMO
Solitary osseous plasmacytoma of the orbit is very rare. It can be part of generalized disease (multiple myeloma) or as localized disease, presenting as orbital tumor. We report a case of solitary osseous plasmacytoma of the orbit with multiple myeloma. This 43-year old male presented with 6 months history of proptosis and decreased visual acuity. CT scan showed an osteolytic, well demarcated lesion with homogenous contrast enhancement in the superolateral part of the right orbit. The tumor including the osteolytic lesion was totally removed. The pathological report revealed a plasmacytoma. Further investigation showed that the plasmacytoma was part of generalized multiple myeloma. The patient was treated with radiation and combination chemotherapy postoperatively. Twenty months after surgery, the local tumor remained well controlled. However, there was systemic progression of the disease, with multiple cutaneous mass and pleural effusion. These resulted in the patient’s deterioration and fi nal demise.
