title: Acute myelofibrosis in a child.
mesh_terms: D000208:Acute Disease; D000741:Anemia, Aplastic / Q000209:etiology; D001853:Bone Marrow / Q000473:pathology; D002675:Child, Preschool; D005260:Female; D006801:Humans; D010198:Pancytopenia / Q000209:etiology; D055728:Primary Myelofibrosis / Q000175:diagnosis* / Q000473:pathology