RT Journal Article SR Electronic T1 Chronic myeloid leukaemia occurring in a patient with hairy cell leukaemia JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 940 OP 941 DO 10.1136/jcp.53.12.940 VO 53 IS 12 A1 F A Wandroo A1 D Bareford A1 F El-Jehani YR 2000 UL http://jcp.bmj.com/content/53/12/940.abstract AB Occurrences of second malignancies in hairy cell leukaemia are well recognised. Most of these malignancies are either solid tumours or lymphoproliferative disorders. The association of myeloproliferative disorders with hairy cell leukaemia (HCL) is very rare. This report describes a case of a patient with HCL who after remaining in remission developed Philadelphia chromosome positive chronic myeloid leukaemia (CML), which rapidly transformed to acute lymphoblastic leukaemia with further cytogenetic abnormalities.