多发性骨髓瘤（ＭＭ）是一种常见的恶性肿瘤，其发病率国外报道为０．２～０．３／１０万，较其他全部恶性骨肿瘤的总和（＜０．０１／１０万）约高１０倍。国内报道，骨髓瘤的患病数约等于霍奇金病和慢性淋巴性白血病的总和。本文对我院搜集到经骨穿或活检证实的ＭＭ１２... Multiple myeloma (MM) is a common malignancy. Its incidence is reported as 0.2 to 0.3 per 100 000 in foreign countries, which is more than the sum of all other malignant bone tumors (<0.01/100,000). 10 times higher. It is reported in China that the number of myeloma cases is approximately equal to the sum of Hodgkin’s disease and chronic lymphatic leukemia. This article collected bone marrow biopsy or biopsy confirmed MM12 in our hospital...