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Dictionary of Cancer Terms

View in Spanish: Mieloesclerosis con metaplasia mieloide

Myelosclerosis with myeloid metaplasia (MY-eh-loh-skleh-ROH-sis MY-eh-loyd meh-tuh-PLAY-zhuh)
A progressive, chronic disease in which the bone marrow is replaced by fibrous tissue and blood is made in organs such as the liver and the spleen, instead of in the bone marrow. This disease is marked by an enlarged spleen and progressive anemia. Also called agnogenic myeloid metaplasia, chronic idiopathic myelofibrosis, idiopathic myelofibrosis, and primary myelofibrosis.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.