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However, they also tend to have a better prognosis than non-Caucasians. Age at diagnosis: children 1–10 years of age are most likely to develop ALL and to be cured of it. Cases in older people are more likely to result from chromosomal abnormalities (e.g., the Philadelphia chromosome) that make treatment more difficult and prognoses poorer.
Acute myeloid leukemia (AML) is a cancer of the myeloid line of blood cells, characterized by the rapid growth of abnormal cells that build up in the bone marrow and blood and interfere with normal blood cell production. [1] Symptoms may include feeling tired, shortness of breath, easy bruising and bleeding, and increased risk of infection. [1]
Leukemia is the most common cancer in children, accounting for 25-30% of all cancers in children and adolescents. [1] [29] [27] It most commonly is diagnosed in children when they are 1–4 years old. The median age of diagnosis is 6 years old. Childhood leukemia is more common in boys than girls.
In children who are cancer-free five years after diagnosis of acute leukemia, the cancer is unlikely to return. [13] In 2015, leukemia was present in 2.3 million people worldwide and caused 353,500 deaths. [7] [8] In 2012, it had newly developed in 352,000 people. [10]
The median age of diagnosis is 70 years. [89] In young people, new cases of CLL are twice as likely to be diagnosed in men than in women. [90] In older people, however, this difference becomes less pronounced: after the age of 80 years, new cases of CLL are diagnosed equally between men and women. [90]
In childhood, T-cell acute lymphoblastic leukemia (T-ALL) patients can expect a 5-year event-free survival (EFS) rate of 70% and an overall survival (OS) rate of 80%. [1] Among the approximately 25% of children who relapse, survival rates drop to 30-50%, with patients generally showing a much poorer prognosis. [ 1 ]
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