DefinitionMultiple myeloma is a rare cancer of the bone marrow. It results from the abnormal growth of plasma cells in the bone marrow. Plasma cells normally produce antibodies. As these abnormal or malignant plasma cells multiply, they produce large quantities of abnormal antibodies. These abnormal antibodies collect in the blood and urine. As the plasma cell tumor grows, it also destroys the bone around it. These events lead to bone pain, kidney damage, and a weak immune system.
|Bone Marrow in Adult|
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CausesCancer occurs when cells in the body divide without control or order. Normally, cells divide in a regulated manner. If cells keep dividing uncontrollably when new cells are not needed, a mass of tissue forms, called a growth or tumor. The term cancer refers to malignant growths. These growths can invade nearby tissues. Cancer that has invaded nearby tissues can then spread to other parts of the body.It is not clear exactly what causes these problems in the cells, but it is probably a combination of genetics and environment.
Risk FactorsMultiple myeloma is more common in people 50 years and older. It is also more common in Afro-Caribbean people than in Caucasians.
SymptomsSymptoms of early stage multiple myeloma include:
- Persistent bone pain, often severe. It is most common in the back but also in the limbs or ribs.
- Increasing fatigue
- Broken bones
- Repeat infections
- Nausea and vomiting
- Difficulty urinating
- Abnormal bleeding
- Visual problems
DiagnosisThe doctor will ask about your symptoms and medical history. A physical exam will be done.Imaging tests evaluate your bones and other structures. These may include:
- Blood tests
- Urine tests
- Bone marrow aspiration or biopsy
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