Chronic Myelogenous Leukemia (CML) is a type of cancer that affects the blood and bone marrow. It is characterized by the presence of an abnormal gene called BCR-ABL, which causes the overproduction of white blood cells. There are several synonyms used to refer to this disease, including Chronic Myelocytic Leukemia, Chronic Myeloid Leukemia, and Chronic Granulocytic Leukemia. The term "chronic" is used to describe the slow progression of the disease, which can take years to develop. While there is no cure for CML, treatments such as medication and stem cell transplantation can help manage the symptoms and prolong the patient's life.