Familial Polyposis of the Colon and Gastric Carcinoma Concurrent Conditions in a 16-Year-Old Boy Edward S. Murphy, M.D., Mario Mireles V., M.D., and Arturo Beltrán O., M.D., Mexico, D.F. IN AN ARTICLE published in 1955, concerning the frequency of carcinoma of the stomach in patients of different age groups, Crawford1concluded that this disease is a malady of people of middle age or older and that it has its greatest incidence in civilized countries in which the life expectancy is greater than 60 years. In a study carried out in the province of Saskatchewan from 1945 through 1953, he found that 87.6% of the patients who were investigated in clinics and found to have gastric cancer were 50 years of age or older, 64.6% were 60 or more, and 30% were over 70 years of age. On the other hand, Cullingworth2in 1877 reported a case of cancer