central nervous system ( cns ) involvement occurred in 45 of 222 ( 20.3 % ) leukemic adults achieving bone marrow ( bm ) complete remission ( cr ) , including 12 of 23 ( 52 % ) acute undifferentiated leukemia ( aul ) , 12 of 32 ( 39 % ) lymphoma leukemia , 5 of 26 ( 19 % ) acute lymphoblastic leukemia , and 16 of 142 ( 11 % ) acute myelogenous leukemia .
C0005953
bone marrow
C0023449
acute lymphoblastic leukemia