Plasma cell neoplasms are diseases in which abnormal plasma cells or myeloma cells form tumors in the bones or soft tissues of the body. Plasma cells develop from B lymphocytes (B cells), a type of white blood cell that is made in the bone marrow. Plasma cell neoplasms can be benign or malignant.
The following types of plasma cell neoplasms are cancer:
- Waldenström macroglobulinemia
- Multiple myeloma
The National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) Program estimated that there were 32,110 people in the United States diagnosed with myeloma and that 12,960 died of the disease in 2019.
Source: National Cancer Institute