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you'd like to help create a webpage that is unique to you. Multiple myeloma is the second most prevalent blood cancer after non-Hodgkin's lymphoma. It represents approximately 1% of all cancers and 2% of all cancer deaths.
Myeloma is often referred to by the particular type of immunoglobulin or light chain (kappa or lambda type) produced by the cancerous plasma cell. The frequency of the various immunoglobulin types of myeloma parallels the normal serum concentrations of the immunoglobulins. The most common myeloma types are IgG and IgA. IgG myeloma accounts for about 60% to 70% of all cases of myeloma and IgA accounts for about 20% of cases. Few cases of IgD and IgE myeloma have been reported.
Although a high level of M protein in the blood is a hallmark of myeloma disease, about 15% to 20% of patients with myeloma produce incomplete immunoglobulins, containing only the light chain portion of the immunoglobulin (also known as Bence Jones proteins, after the chemist who discovered them). These patients are said to have light chain myeloma, or Bence Jones myeloma. In these patients, M protein is found primarily in the urine, rather than in
the blood. These Bence Jones proteins may deposit in the kidney and clog the tiny tubules that make up the kidney's filtering system, which can eventually cause kidney damage and result in kidney failure. Bence Jones proteins will not be detected by routine urinalysis. A more complex test called immunoelectrophoresis can measure the exact amount of Bence Jones proteins in the urine.
A rare form of myeloma called nonsecretory myeloma affects about 1% of myeloma patients. In this form of the disease, plasma cells do not produce M protein or light chains.
Recent statistics indicate both increasing incidence and earlier age of onset. The average age at diagnosis is about 68 years, and only 1% of cases are diagnosed in individuals under the age of 40. Approximately 50,000 Americans currently have myeloma, and the American Cancer Society estimates that approximately 15,980 new cases of myeloma will be diagnosed during 2005.
About the Author
Multiple Myeloma is the most common Cancer of the Plasma Cells. More Info at http://www.eask.info
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