Multiple Myeloma Stages, Classification, and Risk

Multiple myeloma is a type of blood cancer that affects plasma cells. When you have multiple myeloma, your plasma cells change and grow faster than normal. 

Multiple myeloma stages, classifications, and risk are based on the tests done at the time of diagnosis. 

Staging in multiple myeloma is different from that in solid tumors, like breast cancer or lung cancer. Solid tumor staging reflects tumor size and spread. When a solid tumor has spread to other parts of the body, it is called metastatic. Multiple myeloma is a blood cancer that is always considered “metastatic” because it affects the blood and bone marrow.

Myeloma staging focuses on protein levels, kidney function, and bone damage. But it doesn’t predict patient outcomes in the same way that a solid tumor stage might. When you receive your diagnosed “stage,” remember that myeloma staging serves a different purpose and may not closely predict your prognosis.