From the Children’s Oncology Group’s website:
Acute lymphoblastic leukemia (ALL) is a “liquid” tumor or cancer of the blood that starts in the bone marrow and spreads to the bloodstream (the term leukemia comes from Greek words for white and blood). ALL is the most common children’s cancer, accounting for 35% of all cancers in children. There are about 2,900 new cases of ALL diagnosed in children and adolescents (0-21 years old) in the United States each year.
To learn more about ALL, please visit the following links: