What is myeloma?
Bone marrow is the spongy tissue inside bones and plays an important role in the creation of blood cells and the immune system. Healthy plasma cells are a type of white blood cell which make antibodies that help protect the body from infection. Then plasma cells become cancerous and grow uncontrollably they are called myeloma cells. This growth can cause bone pain and an increased risk of a fracture, which is when the bone breaks. The cells also crowd the bone marrow, reducing the capacity to create healthy blood cells and weakening the immune system. The abnormal antibodies made by these cells, which are called paraproteins or light chains, can also damage the kidneys.