The incidence of malignancy and some of the problems of the clinical diagnosis of stomach cancer were examined in 751 autopsied cases of patients 60 years and over in Yokufu-En Geriatric Hospital from 1956 to 1963.
In Yokufu-En, there is an old people's home and a geriatric hospital. 97% of the old people who are admitted to Yokufu-En spend all their remaining lives in this place and inmates of the old people's home who become ill, are admitted to the geriatric hospital; the average autopsy ratio during the past ten years in this hospital was 98.3%.
1. In the males, malignancy was found in 13.7% of the seventh decade, 19.5% of the eighth decade and 14.8% of the ninth decade and over, and in the females, 12.7%, 11.4% and 11.3% respectively.
2. Among the malignancies, stomach cancer was found most frequently (48%), followed by lung cancer (14.7%) and cancer of the gallbladder (7.8%).
3. In 18 of 49 cases, the clinical diagnosis of stomach cancer which was proven at autopsy was impossible, when the patient was alive. It was not easy to make clinical diagnosis of stomach cancer in the aged, when the patient had several chronic diseases and had been confined to bed for a long time, for, in such a patient, we often encountered difficulty in the X-ray examination of the stomach.
4. According to the statistics of the causes of death in Japan, malignancy forms 9.5% of the causes of death in the 75-79 age group, 5% in the 80 years and over, and senility forms 12.5%, 28.5% respectively; in the 80 years and over it is the most frequent cause. However, from the statistics of malignancy in this study and from other studies of the causes of death in the aged, it is suggested that among those, whose cause of death is attributed to senility in Japan, there may be a considerable numbers of undiagnosed malignancy.
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