oa Central African Journal of Medicine - Variations in geographical cancer epidemiology

Volume 33, Issue 3
  • ISSN : 0008-9176



Major differences in cancer frequency between Western and Third World populations are well known. In populations in individual Western countries, less well appreciated are the wide ranges in frequency which often occur in rural compared with urban areas, located close to each other. Examples are given of these various situations. While differences in risk factors have been advanced to account for these contrasting rates of cancer incidence, full explanations have not been reached. Since cancer remains a formidable disease. it is disappointing that in contrasting situations of the types depicted, some of which appear exceptionally propitious for the elucidation of the causative factors, only limited progress in understanding has been achieved.

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