Napa Valley/Sonoma Area

Multiple myeloma is a cancer of the bone marrow plasma cells. It is synonymous with "myeloma" and "plasma cell myeloma." Plasma cells make antibodies against infectious agents such as viruses and bacteria. A cancerous or malignant plasma cell is called a myeloma cell. Myeloma is called “multiple” because there are frequently multiple patches or areas in bone marrow where it grows.