Patients with acute myeloid leukemia (AML) who enter remission with abnormal chromosomes in bone marrow cells are twice as vulnerable to recurrence of their disease as are AML patients with normal bone marrow cells at remission, according to a new study. The findings by researchers at The Ohio State University Comprehensive Cancer Center – Arthur G. James Cancer Hospital and Richard J. Solove Research Institute call for routine testing for chromosomal abnormalities in AML patients at diagnosis and again when patients enter remission.