抄録
We reported a 69-year-old male case of multiple myeloma. His chief complain was a skin tumor, and it was localized on his forearm. After general examination of whole the body, atypical myeloma cells were found in the bone marrow. We selected radiation therapy, because of his age, past disease history, and so on. The tumor expressed good response, and reduced clinically. But, in a short time, it formed metastatic lesions in both thoracis vetebra and forearm arround the first lesion.
Multiple myeloma is a disease, which is usually found and mainly complained chronic anemia, morbid bone fracture, and lumbago. This case that we reported was found as extramedullary plasmacytoma on the skin, and in that point, it was comparatively rare clinically.
