what is myeloproliferative disorder
Myeloproliferative neoplasms (MPN). Myeloproliferative neoplasms (MPN), previously called myeloproliferative disorders (MPD), are a group of diseases that affect normal blood cell production in the bone marrow.In this case the bone marrow causes an overproduction of one or more blood cell types (red cells, white cells or platelets).yeloproliferative neoplasms (MPN). Myeloproliferative neoplasms (MPN), previously called myeloproliferative disorders (MPD), are a group of diseases that affect normal blood cell production in the bone marrow.