The earlier reported statistics of cholelithiasis vary by chronology as well as by area in Japan. The purpose of this report is to inform of the result of our analytical study with the 176 cholelithiasis patients who were operated at Yokosuka National Hospital in the last 8 years.
1) In recent years, of cholelithiasis cases, cholesterin faction gall stone has been increasing in Japan;and this is particularly true of urban areas. The result of our studies confirms the identical pattern of tendency at Yokosuka National Hospital.
It is interesting to note that cholesterin faction gall stone occurred more often in female than male patients. Female incidence was two times as high. Bilirubin Ca, faction gall stone was blamed for a greater number of cholelithiasis cases in which emergency operations were required or senile patients involved,
2) Incidence of cholelithiasis was two times and a half higher in female than male patients. Our finding is the highest statistics of all earlier reports in Japan.
3) There were cholecystitis with and without stone at the ratio of 13.2: 1. It is found rather high, as compared with the figures reported earlier in Japan.
4) Ninety one and four tenth percent of patients who were examined with the supersonography had the correct diagnosis, assuring that it is much better than cholangiography.
5) Senile patients accounted for 15.3% of all cholelithiasis cases, 37.5% of Suet-stone and 23.7% of emergency operation in our studies.
6) Mortality was 2.8%, claiming only patients of 64 or more of their age. The post-operative survey was conducted by us receiving the returned questionnaire from 76% of involed patients. The result shows that 2.4% of them had the post-operative obstructions.
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