Leukaemia can be divided into leukemia according to the course of leukemia and cell morphology:

(1) acute leukemia cell differentiation stagnates in the early stage, the disease develops rapidly, the bone marrow and surrounding blood are mainly abnormal primitive and immature cells. Its natural course of disease is within 6 months. Acute leukemia is also divided into A, acute lymphoblastic leukemia (ALL), B, and acute non lymphocytic leukemia (AML).

(2) the course of chronic leukemia is longer, and the main abnormal cells in bone marrow and blood are mature, followed by immature cells. The course of natural disease is more than one year. Chronic leukemia is mainly included: chronic myelocytic leukemia (CML); chronic lymphocytic leukemia (CLL).

(3) special type leukaemia, such as hypoplastic leukemia, green tumor or granulocytic sarcoma, eosinophilic leukemia, eosinophil leukemia, etc.

In general, leukemia is checked by the following methods:

(1) blood routine examination can detect the number of red blood cells, white blood cells and platelets, and classify white blood cells, so as to determine whether it is blood.

(2) bone marrow biopsy is an important examination for the diagnosis of leukemia, and the number of cells in the bone marrow can be counted and classified by examination. If the bone marrow is found to have abnormal conditions, it can be basically determined to be leukemia.

(3) immunophenotype, we also need to extract bone marrow from patients, and then use monoclonal antibody to identify and classify the types of leukemia cells for further judgement.

(4) the aim of cytogenetics is to understand the abnormalities of the chromosomes of leukemic cells. Chromosome abnormality is also one of the important causes of leukaemia.