Medical Dictionary

myelodysplastic syndrome

noun

Medical Definition of myelodysplastic syndrome

  1. :  any of a group of bone marrow disorders that are marked especially by an abnormal reduction in one or more types of circulating blood cells due to defective growth and maturation of blood-forming cells in the bone marrow and that sometimes progress to acute myelogenous leukemia—called also myelodysplasia, preleukemia


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