Aplastic anemia is not leukemia, but there is a very small chance that aplastic anemia can transform into leukemia. Aplastic anemia is a bone marrow failure syndrome, and its clinical presentation often includes pancytopenia. It can be classified into acute aplastic anemia and chronic aplastic anemia. Leukemia often manifests with high white blood cell counts, anemia, and low platelet counts. It is caused by the infiltration of leukemia cells into the bone marrow, leading to the suppression of normal hematopoiesis, and is classified as a malignant hematological tumor. Leukemia can be divided into acute leukemia and chronic leukemia.