Myelofibrosis-myeloid metaplasia in childhood

A child with idiopathic myeloid metaplasia is described and her course contrasted with another child having myeloid metaplasia secondary to reticulum cell sarcoma. Despite prior reports the idiopathic form of illness may pursue a relatively indolent course in children. A thorough search should be made for underlying disease when myeloid metaplasia is first diagnosed.