Myelodysplastic/myeloproliferative diseases: a group of
diseases in which the bone marrow does not make enough healthy blood cells
Myelodysplastic/myeloproliferative diseases (neoplasms)
are a group of diseases in which the bone marrow makes too many white blood
cells. Myelodysplastic/myeloproliferative neoplasms have features of both
myelodysplastic syndromes (MDS) and myeloproliferative neoplasms.
In myelodysplastic diseases, the blood stem cells do not
mature into healthy red blood cells, white blood cells, or platelets. The
immature blood cells do not work as they should and die in the bone marrow or
soon after they enter the blood. As a result, there are fewer healthy red blood
cells, white blood cells, and platelets.
In myeloproliferative diseases, a greater than normal
number of blood stem cells become one or more types of blood cells, and the
total number of blood cells slowly increases.
Learn about myelodysplastic/myeloproliferative diseases,
and find information on how we support and care for people with these diseases
before, during, and after treatment.
The following information is from the National Cancer
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