Central nervous system leukaemia.

نویسندگان

  • H S Friedman
  • J K Pincus
  • J M Falletta
چکیده

, SlR,—We read with interest the article by Dr Nesbit and others (June 27, p. 1386) on isolated central nervous system acute lymphocytic leukaemia in children. In this very helpful article Nesbit et aL state that "CNS relapse rates are lower in patients receiving effective treatment before CNS symptoms arise, but the bone marrow relapse rate was not significantly affected by prophylactic therapy". However, we do not find data to support their later contention that "the improved survival of childhood ALL during the past decade is probably not due to the successful prevention of CNS leukaemia". To defend this notion, they might have compared the disease-free survival of patients who first relapsed in the CNS with that of the remaining patients. We are presented with the data for the former group (17/86, 20%) at 6 years, but not for the latter group. Only if this comparison reveals no significant difference can the controversial statement quoted above be regarded seriously. That disease-free survival of the two groups may differ substantially might be inferred by comparing the marrow relapse rates for those patients with isolated CNS relapse versus the remaining group. The marrow relapse rate for patients with isolated CNS relapse was 60% (51/86) while for the remaining group, the proportion of patients with marrow relapse was about 30% at 5 years. 1

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عنوان ژورنال:
  • Lancet

دوره 2 8247  شماره 

صفحات  -

تاریخ انتشار 1981