Epidemiology
The exact number of people with MDS is not known because it can go undiagnosed and there is no mandated tracking of the syndrome. Some estimates are on the order of 10,000 to 20,000 new cases each year in the United States alone. The incidence is probably increasing as the age of the population increases, and some authors propose that the incidence in patients over 70 may be as high as 15 cases per 100,000 per year.
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