The surveillance, epidemiology, and end-results (SEER) data on 5-year
relative survival rates (1973-1987) for the most common pediatric tumo
rs (ages 0-14) were analyzed. The SEER data are population based, so t
he observed progress in survival from childhood cancer represents the
real impact that development in cancer treatment had on the population
followed by the registry. The greatest increase in survival rate from
1973 unitl 1987 has been achieved in hematopoietic tumors such as acu
te lymphocytic leukemia (ALL), in which survival increased from 47.6%
(1973-1977) to 60.8% (1983-1987), and Burkitt's lymphoma in which surv
ival increased from 27.6% (1973-1977) to 68.7% (1983-1987). Solid tumo
rs showed a less steep, but steady increase in survival rates. Flatten
ing in the survival rates since 1978-1982 has been observed for acute
leukemia, astrocytoma, medulloblastoma, and osteosarcoma. Females have
better survival rates for most pediatric tumors, except Hodgkin's dis
ease. Analysis of race of childhood leukemia confirmed that black chil
dren have worse survival than white. When solid tumors were analyzed b
y stage at presentation, there was no indication that diagnosis in ear
lier stages of disease accounted for the improved survival. Observed f
lattening in the survival rates since 1978-1982 of leukemia and some s
olid tumors warrants further follow-up. (C) 1994 Wiley-Liss, Inc.