The difference between chronic granulocytic leukemia and leukemia

Written by Li Fang Fang

Hematology

Updated on May 26, 2025

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Chronic granulocytic leukemia is no different from leukemia; it's simply a type of leukemia. Leukemia is divided into acute leukemia and chronic leukemia, with chronic leukemia further divided into chronic granulocytic leukemia and chronic lymphocytic leukemia. Currently, chronic granulocytic leukemia can be clinically cured by oral tyrosine kinase inhibitors, unlike other acute leukemias that require hospitalization for intravenous chemotherapy. Patients with chronic granulocytic leukemia need to regularly return to outpatient clinics for follow-ups and medication guidance after taking oral medications. Overall, the prognosis for chronic granulocytic leukemia is relatively good, with a comparatively longer survival period. (Medication should be used under the guidance of a doctor.)

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The difference between chronic granulocytic leukemia and leukemia

Chronic granulocytic leukemia is a type of leukemia, which itself is a group of malignant clonal disorders of hematopoietic stem cells. In leukemia, the leukemic cells exhibit enhanced self-renewal, uncontrolled proliferation, and obstructed apoptosis, causing a halt at various stages of cell development. Leukemia is divided into acute leukemia and chronic leukemia. Acute leukemia includes acute lymphoblastic leukemia and acute myeloid leukemia, while chronic leukemia includes chronic lymphocytic leukemia and chronic granulocytic leukemia. The primary difference between acute and chronic leukemia is that the leukemic cells in acute leukemia mainly stall at the primitive and immature stages, whereas in chronic leukemia, the cells primarily remain at the mid-immature and late-immature stages.

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Is leukemia treatment free?

Leukemia is a type of malignant tumor originating from hematopoietic stem cells and progenitor cells in the myeloid hematopoietic system. Leukemia cells differentiate and organize at the early stages of different myeloid developments, exhibiting the morphological and immunophenotypic characteristics of myeloid development. The incidence of acute myeloid leukemia in the population is 2-4/100,000, with the median age of onset being sixty-four to seventy years, making it a disease of the elderly. The incidence increases with age, accounting for 70% of acute leukemias, and representing 55%-70% of infant, 17%-20% of childhood, and 80%-90% of adult acute leukemias. Regarding the medical insurance situation in China, some leukemia conditions are eligible for major illness assistance. All leukemia treatments can be reimbursed at a certain ratio under the national health insurance, although there is no free treatment for leukemia at present, unless one participates in relevant clinical trials, which could offer some compensation, and certain treatment drugs are provided free of charge.

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Does leukemia cause vomiting?

Leukemia can cause vomiting. There are two reasons why leukemia patients experience vomiting: one is caused by the leukemia itself. If the white blood cell count in leukemia patients abnormally increases to more than 100×10^9/L, this condition is called hyperleukocytosis. In the state of hyperleukocytosis, the body is in a state of ischemia and hypoxia, which can manifest as dizziness, headache, and vomiting in the nervous system. The other reason is that during chemotherapy, the use of chemotherapy drugs can lead to gastrointestinal reactions such as nausea and vomiting.

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Differentiation between Leukemoid Reaction and Leukemia

Leukemoid reactions and acute leukemia can both present with fever and elevated white blood cell counts, but there are clear differences between the two. Leukemoid reactions are often caused by severe bacterial or viral infections, with the main symptom being fever. Blood tests may show an increase in white blood cells, primarily neutrophils, and peripheral blood smear can reveal myelocytes and metamyelocytes. Leukemia can also involve an increase in white blood cells and fever when there is a concurrent infection, but blood tests will also show reductions in hemoglobin and platelets. Neutrophil alkaline phosphatase score is significantly elevated in patients with leukemoid reactions, while it is generally normal in patients with leukemia. A bone marrow examination can easily differentiate between leukemoid reactions and leukemia.

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How is acute leukemia chemotherapeutically treated?

Acute leukemia is first divided into two main categories: one is acute myeloid leukemia, and the other is acute lymphoblastic leukemia. The chemotherapy regimens for these two types are different. Among them, acute myeloid leukemia is further divided into eight types from M0 to M7, among which type M3 can be treated with oral targeted chemotherapy drugs, while other types of acute myeloid leukemia require chemotherapy for treatment. The other main category is acute lymphoblastic leukemia, which also requires chemotherapy for treatment.