What is myeloproliferative disorder?

The myeloproliferative diseases ("MPD"s) are a group of diseases of the bone marrow in which excess cells are produced. They are related to, and may evolve into, myelodysplastic syndrome and acute myeloid leukemia, although the myeloproliferative diseases on the whole have a much better prognosis than these conditions. The concept of myeloproliferative disease was first proposed in 1951 by the eminent hematologist.
Please see the web pages for more details on Myeloproliferative disorders.

The name refers to a group of disorders that involve an abnormal over production or under production of certain blood cells or connecive tissue cells (depending on the specific disorder). Myeloproliferative disorders include polycythemia vera (PV), myelofibrosis (MF), chronic myelogenous leukemia (CML) and chronic myelomonocytis leukemia (CMML).