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J Korean Cancer Assoc > Volume 22(1); 1990 > Article
Journal of the Korean Cancer Association 1990;22(1): 202-208.
Stomach Carcinoma in the Young Adults - Analysis of 111 Cases , and Review from Literatures -
Dong Soo Suk
There are lll cases under 40 years old out of 584 stomach carcinoma from Seoul and Pusan Paik hospitals, Korea. It is 19. 0% of the total stomach carcinoma, and male-female ratio is 1 2: l. Under 35 years, it is 10.0%(62 cases), and male-female ratio is 0.9: l. Undifferentiated carcinoma is the predominant type, 76.7%, and differentiated type 23.3%. Proximal parts of stomach (body, fundus, cardia) are affected more, 46.8%, and antrum 38.5%, and body with antrum 14.7%. The present data (10.6%) of the incidence under 35 years old is notably higher than that of Japan (1.7-2.8%) and America (0.49~2.2%). These data of the incidence appear proportionally high with the degree of risk factors of these three countries. There are more undifferentiated or diffusely infiltrating type in the young adults, and the incidence of this type is stable without affected much by the environmental factor. Only differentiated or intestinal type of stomach cancer is variable with the enviromentai risk factor. These facts suggest that enviromental factor is mostly responsible for the development of intestinal type, and hereditary factor for the diffuse type. Based upon these presumptions, it is easily understandable ta find an each different male-female ratio in older and younger age groups (2: 1, 1: 1, respectively). These principal findings can be expected to exist in other human cancers which are developed by known or suspected carcinogenic agents. Leukemia and nasopharyngeal carcinoma are good examples. For, it is speculated that in young age group, hereditary factor is the cause, and in older age group, environmental factor is the cause in the above cancers.
Key words: Stomach Carcinoma, Young Adults, Epidemiology, Korean
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