AGE INCIDENCE IN CARCINOMA

Abstract
The progressive increase in the incidence of carcinoma as the middle period of life is approached and reached has long been recognized. Most writers have contented themselves with a statement of this fact, leaving the reader to understand that even in advanced years the progressive increase is maintained. For instance, Bashford1 says : "Carcinoma appears in the human subject with increasing frequency as life advances." He recognizes, however, that the carcinoma incidence in those organs which undergo a definite phase of involution long before senile changes in the organism as a whole are marked, is highest during such involutionary processes. This he bases on statistics of breast and uterine cancer. Senn2 gives a suggestion that in extreme old age the cancer incidence is decreased, as the following quotation shows : "Carcinoma manifests a predilection for the conditions incident to senile marasmus, occurring most frequently in persons between 50 and 70

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