Epidemiology of hemopoietic system neoplasms in Argentina.

The mortality caused by blood neoplasms in Argentina shows great irregularity. This was found to be caused in certain ways by (a) differences in the sexes and ages of the populations studied; (b) differences in available health services; and (c) environmental factors. Thus high rates and clusters of lymphomas and multiple mylomas were observed in zones with arsenical water, for example. In rural districts, the rates are lower, especially among old-aged people. Lower rates of leukemias were also observed among Spaniards compared to Italians ( p=0.001) residing in Argentina. Turkish, Syrian, and Lebanese showed higher rates than Argentinians, Spaniards, or Italians. The results of a case-control study are given in which the following were observed: [ABSTRACT FROM AUTHOR]