In children and teens, leukemia is the most common cancer accounting for almost 1 out of 3 cancers. However, overall, leukemia is a rare cancer in children. Among various types of leukemias in children and teens, acute lymphocytic leukemia (ALL) is the most common followed by acute myelogenous leukemia (AML).
Leukaemia is the general name given to a group of cancers that develop in the blood forming tissues and blood cells including the bone marrow and the lymphatic system. Leukaemia starts in developing blood cells that have undergone a malignant change. It is classified on the basis of the type of cells from which it originates.
There are various types of leukemia. They are classified based on the type of blood stem cell they develop from and how quickly the leukemia develops and grows. Leukemias developing from abnormal lymphoid stem cells are known as lymphocytic leukemias. These are also known as lymphoblastic leukemias.