A Case Report of Solitary Sternal Myeloma.

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A 75-year-old woman with a solitary sternal myeloma is reported. The patient was admitted because of a tumor of the ternum. Skeletal roentgenograms showed an osteolytic lesion only in the sternum. Serological examinations indicated a slight decrease in immunoglobulin and an absence of the monoclonal component in serum electrophoresis. The urine contained Bence-Jones (λ) protein. Myeloma cells were not seen on examination of the bone marrow. The histopathological diagnosis of myeloma was made and then solitary myeloma (BJ-λ) was diagnosed. A block resection of the sternum was performed and the thoracic wall defect reconstructed using Marlex mesh. Respiratory function after surgery was satisfactory. Bence-Jones protein continued to be excreted in the urine after surgery leading to the conclusion that the patient had developed multiple myeloma.