INTRODUCTION;
Acute lymphoblastic leukemia /lymphoma (LBL) is a clonal hematopoietic
stem cell disorder of B or T cell origin. LBL comprise approximately
30% of childhood Non Hodgkin Lymphomas. Chronic myeloid leukaemia (CML)
constitutes 2–3% of leukaemia in children. Atypical CML (BCR-ABL
negative) is a challenging myeloid malignancy with features of both
myeloproliferative and myelodysplastic syndromes. The diagnosis of both
myeloid and lymphoid neoplasms in a single patient, whether simultaneous
or sequential, is extremely rare, with an overall incidence of less than
1% 1. Our reported case has concurrent T
Lymphoblastic Lymphoma and BCR-ABL Negative CML, which has never been
reported in the literature before.