A STUDY OF CLINICO-EPIDEMIOLOGY ON MULTIPLE GASTRIC CANCER

概要

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A clinico-epidemiological analysis was carried out using 75 patients with multiple gastric cancer, who were found among 1,256 patients with gastric cancer surgically resected. The relative frequencies of multiple gastric cancers to all gastric cancers examined were 7.9 per cent in the early gastric cancer, 5.8 per cent in the sub-early gastric cancer, 5.1 per cent in the advanced gastric cancer; the average frequency was 6.0 per cent. The age-specific sex ratios in the 75 patients were higher in the young groups, under 50 years of age, and were lower in the old groups, in comparison with each of the age-specific sex ratios in 1,340 patients with gastric cancer including inoperable cases. On the distribution of the main original cancer sites in the stomach, both frequencies of the cardia and the pyloric antrum were more predominant in the case of multiple cancers than in the case of 1,340 gastric cancers. Especially, 11 patients out of the total 75 were the patients with polyposis cancer in the pyloric antrum. In the case of old males, of 50 years old and over, most of cardia caners were strongly affected by the environmental factors, and on the contrary the majority of polyposis cancers in the pyloric antrum were associated with the host factors such as ABO blood groups and cancer family history.
1977-11-28