MINOR BREAKPOINT CLUSTER REGION (M-BCR) POSITIVE CHRONIC MYELOID-LEUKEMIA WITH AN ACUTE LYMPHOBLASTIC-LEUKEMIA ONSET - A CASE-REPORT

m-BCR chronic myeloid leukaemia (CML) is a rare entity. We report a pa tient presenting with Philadelphia (Ph)-positive, m-BCR-positive acute lymphoblastic leukaemia (ALL) who achieved complete remission after i nduction chemotherapy, but showed a majority of Ph-positive mitoses du ring this remission, A diagnosis of m-BCR CML was established and the patient was given interferon a therapy. This is the first m-BCR CML pr esenting as ab initio ALL. This report emphasizes the importance of ka ryotyping Ph-positive ALL during remission so as not to misdiagnose CM L patients who can benefit from Interferon therapy.