AGE INCIDENCE IN SARCOMA

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Abstract
In a previous statistical study1 it was shown that the incidence of carcinoma is greatest at the age period 58 to 62, and that there is a definite decrease in carcinoma incidence after this period. In the present report it is proposed to treat by a similar method a large group of sarcoma ages obtained from the same source, hoping in this way to contribute to the knowledge of the biologic relationship between the two types of malignant disease. In the past it has been the custom of both pathologists and surgeons to find in age incidence one of the chief points of difference between carcinomas and sarcomas. The usual statement of text-books has been that carcinoma is a disease of the old and sarcoma of the young. Da Costa2 says that sarcomas may arise at any period from birth to extreme senility, but that they are commonest

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