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Every 4 minutes one person is diagnosed with a blood cancer.

Myeloproliferative disorders is the name for a group of conditions that cause blood cells -- platelets, white blood cells, and red blood cells -- to grow abnormally in the bone marrow. Though myeloproliferative disorders are serious, and may pose certain health risks, people with these conditions often live for many years after diagnosis. The prognosis largely depends on the type of disorder.

Myeloproliferative disorders include:

* Polycythemia vera -- occurs when the bone marrow produces too many blood cells, especially red blood cells
* Essential thrombocytosis -- occurs when the body produces too many platelet cells, which help blood to clot. Clots can block blood vessels leading to heart attack or stroke.
* Primary or idiopathic myelofibrosis (also known as myelosclerosis) -- occurs when the bone marrow produces too much collagen or fibrous tissue in the bone marrow. This reduces bone marrow's ability to produce blood cells.
* Chronic myelogenous leukemia (CML) -- cancer of the bone marrow that produces abnormal granulocytes (a type of
white blood cell) in the bone marrow


Every 4 minutes one person is diagnosed with a blood cancer.

An estimated 139,860 people in the United States will be diagnosed with leukemia, lymphoma or myeloma in 2009. New cases of leukemia, Hodgkin and non-Hodgkin lymphoma and myeloma account for 9.5 percent of the 1,479,350 new cancer cases diagnosed in the United States this year*.

Overall incidence rates per 100,000 population for leukemia, lymphoma and myeloma are almost identical for data reported in 2008 and 2009 [(leukemia 12.2, 2009 vs.12.3, 2008); (NHL, 19.5, each year); (Hodgkin lymphoma, 2.8, each year); (myeloma, 5.6, each year)].

Leukemia, lymphoma and myeloma will cause the deaths of an estimated 53,240 people in the United States this year. These blood cancers will account for nearly 9.5 percent of the deaths from cancer in 2009 based on the 562,340 total cancer-related deaths.

Every ten minutes, someone dies from a blood cancer. This statistic represents nearly 146 people each day, or more than six people every hour. Leukemia causes more deaths than any other cancer among children and young adults under the age of 20. In general, the likelihood of dying from most types of leukemia, lymphoma or myeloma decreased from 1996 to 2005 (the most recent data available).

*Facts and statistics from Leukemia, Lymphoma, Myeloma Facts 2009-2010, June 2009.