尿路結石症の臨床統計 --岩手医科大学泌尿器科にあける最近7ヵ年間(1954～1960年)の観察--

Abstract

During these seven years, there were seen 248 cases o f urolithiasis amongt he 5, 775c ases of urological patients who visited the Iwate Medical College, which is located in the eastnorthern part (Tohoku District) of Japan. Clinical statistical observations of the 248 cases gave the following results : 1) The occurrencei nc i d enceo f urolithiasisd uringt hese seven years was 4 .3%/4.8%"-3.9% (Occurrencei ncidence/confidencleim it : upper l imit—lowerl imit). 2) As to sex, the conditionw as noted to occurs ignifican t ly( P < 0 .001)f ar more frequently in male (192 c ases: 77.4%/81.9%"-72.0%t)h an in female (56 cases : 22.6%/27.5%018.5%). 3) As to age, it was noted to be seen most frequently in the th i r d decade (78 cases: 31.5%/37.3%, --26.2%t)h, ereafter gradually decreasing in number with age. Around half of the patients were in the age group between 21 and 40 years of age (142 cases : 57.3%/68.4% —47.6%). 4)C oncerningi ts occurrence sites, ureter occupiedt he greatest proportion (119 cases: 46.7%/52.7%, --40.8%fo), l lowedb y bladder (57 c ases : 2 2.4%/27.3%-18.3%).D ividingt he case s into urolithiasis of the upper urinary tract and that of the lower urinary tract, it was revealed that the occurrence incidence of the former was significantly( P < 0.001) greater than that of the latter, making us recognizet hat the so-called- Steinwelle" has become finally observed also in this part of Japan. 5) As to occup a tiono f the patients, it was found that the condition in this part of Japan occurred highly in office workers (94 case 37.9%/43.7%, -32.8%), and then in farmers (70 cases : 28.2%/33.8%, -23.5%). Further, it was noted that in these office workers the occurrence incidence of urolithiasis of the upper urinary tract was significantly (p<0 .001) greater than that of the lower urinary tract. These results were also c o mpared with the results obtained in our College's previous observation made by Isurugi & Kosegawao in 1957 (24 years' observation from '30 to '53) as well as that of Prof. Inada's (Kyoto University) statistical studiesoo on the condition of the whole Japan made in 1955. Status of urolithiasis of this part of Japan was confirmed to have quite changed in recent years ('54'60) increasing its occurrence incidence, the so-called "Steinwelle" becoming to be ob served, ureter calculi simultaneously being noted to occupy the greatest proportion and the condition being seen more highly in office workers than in farmers, and thus showing similar trends to that noted in Prof . Inada's studies.8)9)