age groups of leukemia
In young adults, leukemia rates are somewhat lower but the disease is still one of the 5 most common forms of cancer in the 15-39 age group. Childhood leukemia rates in the USA have been increasing steadily by around 1% a year for the past half century. Leukemia is the most common form of childhood cancer. In the United States, leukemia affects around 3,500 children aged 0-14 each year which represents around 40% of all childhood cancers. There were 2866 cases with AML, including 99 with APL, 408 with acute lymphoblastic leukemia, and 97 with acute undifferentiated/unclassified leukemia. This corresponds to 98% of all patients with acute leukemia in the Swedish Cancer Registry. Missing patients had a similar age and sex distribution as patients in the Leukemia Registry. The current report is thus based on 2767 patients with non-APL AML. The Swedish Acute Leukemia Registry covers 98% of all patients with AML (nonacute promyelocytic leukemia) diagnosed in 1997 to 2005 (n = 2767), with a median follow-up of 5 years, and reports eligibility for intensive therapy, performance status (PS), complete remission rates, and survival. Leukemia (American English) or leukaemia (British English) is a group of cancers that usually begin in the bone marrow and result in high numbers of abnormal white blood cells. These white blood cells are not fully developed and are called blasts or leukemia cells. Results of karyotyping were not captured by the whole registry; however, in one region, 293 karyotypes were available, with 1% favorable, 69% intermediate, 25% high-risk karyotypes according to Grimwade et al, and 5% unknown in the population 60 to 79 years of age (G.J., B. Johansson, unpublished data, January 2008). 1 Acute lymphoblastic leukemia (ALL) is the most common type of leukemia in young children. 2  It also affects adults, especially those 65 and older. 3  Standard treatments involve chemotherapy and radiotherapy. 4  The survival rates vary by age: 85% in children and 50% in adults. In the under 20 and 20-49 age groups, leukemia survival rates have more than doubled since 1975. In older age groups, survival improvements have been more modest. The graph to the right shows 5-year survival rates for the under 45 age group across the four sub-types of leukemia. With the exception of AML, survival rates are very high. The success of treatment depends on the type of leukemia and the age of the person. Outcomes have improved in the developed world. The average five-year survival rate is 57% in the United States. In children under 15, the five-year survival rate is greater than 60 to 85%, depending on the type of leukemia. Surviving patients had a median age of 53 years at diagnosis (quartiles, 42-62 years; maximum, 87 years). Overall survival according to age group is shown in Figure 5. Survival decreased with every 5-year age group, except for ages 55 to 64 years.
Aged 0-14.