The leukemia is cancer more common in childhood. Any child can have it, from a newborn to a teenager, however, most small diagnosed with this disease are between 4 to 9 years old.
It is proved that there is a better prognosis for children between 1 to 9 years. Those with 10 or more years are at increased risk for leukemia more aggressive, not responding to treatment, and children younger than 1 year have a more delicate situation.