Multiple myeloma

Multiple myeloma (mm) is the most common type of malignant plasma cell disease, also known as myeloma, plasma cell myeloma or Kahler disease. Multiple myeloma was not generally known and recognized until Kahler reported the case in detail in 1889. Multiple myeloma is characterized by malignant proliferation of monoclonal plasma cells and secretion of a large number of monoclonal immunoglobulins. The incidence rate is estimated at 2~3/10 million, the ratio of male to female is 1.6:1, most of the patients are >40 years old, and black patients are 2 times as white as white people.