摘要: The surveillance, epidemiology, and end-results (SEER) data on 5-year relative survival rates (1973-1987) for the most common pediatric tumors (ages 0–14) were analyzed. SEER are population based, so observed progress in from childhood cancer represents real impact that development treatment had followed by registry. The greatest increase rate 1973 until 1987 has been achieved hematopoietic such as acute lymphocytic leukemia (ALL), which increased 47.6% (1973–1977) to 60.8% (1983–1987), Burkitt's lymphoma 27.6% 68.7% (1983–1987). Solid showed a less steep, but steady rates. Flattening since 1978–1982 leukemia, astrocytoma, medulloblastoma, osteosarcoma. Females have better tumors, except Hodgkin's disease. Analysis of race confirmed black children worse than white. When solid analyzed stage at presentation, there was no indication diagnosis earlier stages disease accounted improved survival. Observed flattening some warrants further follow-up. © 1994 Wiley-Liss, Inc.