[Long-term survivors of acute leukemia in Japan]

Our analysis of the 9th investigation for long-term survivors of acute leukemia (1988) is based on the answers to the questionnaire sent to about 1400 hospitals all over the country. This result makes it clear that there exist 2202 long-term survivors in Japan, now, with a recent increasing tendency; that is, 1607 children and 595 adults, and it documents also that the long-term survivors without relapse have extremely better prognosis than the relapsed long-term survivors.