A Very Rare Case Presentation of Chronic Lymphocytic Leukemia Occurring during the Course of Chronic Myeloid Leukemia

The occurrence of Chronic Myeloid Leukemia (CML) And Chronic Lymphocytic Leukemia (CLL) in the same patient is a rare event. In at least some of the cases the etiology appears to be either chemotherapy or radiation therapy induced molecular damage to the hematopoietic stem cells. However, a report of a few cases where coexistence or subsequent development of the two diseases was found in previously untreated patients also raises the possibility of other causes. We report the case of one patient who was diagnosed with CLL 66 months after CML diagnosis. This article is to the best of our knowledge only the sixth case report of its nature in published literature and the first from India.