Acute leukemia can be divided into acute lymphoblastic leukemia (ALL) and acute myeloblastic leukemia (AML). ALL is a cancer of the lymphoid cells that progresses quickly and requires immediate treatment, affecting both adults and children. It can be classified based on morphological markers into three types. The diagnosis of ALL involves blood tests showing increased white blood cells, normochromic anemia, and thrombocytopenia. AML is a cancer of the myeloid blood cells that causes rapid growth of abnormal white blood cells and reduces normal blood cell production, mainly affecting adults. The diagnosis of AML also uses blood tests showing increased or abnormal white blood cells and decreased red blood cells and platelets.