多发性骨髓瘤(以下称MM)是一种浆细胞异常增生的恶性肿瘤。由于潜伏期长,损害范围广泛,并发症多,而且由于瘤细胞增生程度和浸润范围不一,临床表现可能不典型或者十分复杂,往往造成诊断上的困难。但是对MM如有深入而全面的认识,则MM的诊断也 Multiple myeloma (hereinafter referred to as MM) is a malignant tumor of abnormal proliferation of plasma cells. Due to the long incubation period, a wide range of damage, complications and more, and because of the degree of tumor proliferation and infiltration range, the clinical manifestations may be atypical or very complex, often resulting in diagnostic difficulties. However, MM, if in-depth and comprehensive understanding of the MM’s diagnosis too