title: Primary thrombocythemia in a child.
mesh_terms: D000293:Adolescent; D002066:Busulfan / Q000627:therapeutic use*; D002648:Child; D006801:Humans; D008297:Male; D013163:Splenomegaly / Q000209:etiology; D013922:Thrombocytosis / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy*
chemical_list: D002066:Busulfan