[Breast cancer in women as a paradigm for ageing as a hidden syncarcinogenic factor]

In man the application of so-called cancerogenic factors and the latency period of a neoplasm until its manifestation includes the factor of biological ageing. There are in humans relationships between age, localisation and incidence of tumour which can retrospectively appear as syncarcinogenic factors. Using breast carcinoma in women as an example, it is shown that a carcinogenic effect cannot be demonstrated for two of the supposed carcinogenic factors, namely repeated diagnostic radiographic measures and administration of Rauwolfia-alkaloid containing drugs.