尿路結石の臨床統計

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During the 10-year period from January, 1963 to December, 1972, 1, 820 patients with urinary tract calculi were seen in the Department of Urology, the University of Tokyo Hospital. They consisted of 917 patients with ureteral stones, 655 with renal stones, 110 with bladder stones, 21 with urethral stones and 117 with the combination of the aforementioned diseases. The ratio of males to females was 2,6 to 1. About one-fourth of patients with upper urinary tract calculi had multiple stones. One-tenth of them had stones bilaterally. Approximately one-half of spontaneous passage of ureteral calculi occurred within one month after diagnosis. The average size of calculi passed spontaneously within one month was significantly smaller than that passed after one month or later. The overall rate of spontaneous passage of ureteral stones within one year was 53% (269/503) in this series. In all calculi measuring more than 8mm in width, spontaneous passage will not be anticipated by expectant treatment, while one-fourth of stones measuring 7mm and one-third of those measuring 6 mm in width will pass spontaneously within one year. The average lengths of ureteral calculi passed spontaneously, manipulated endoscopically and treated by ureterolithotomy were 6.3 mm±2.5 (SD), 7.7±2.6, and 11.7±5.0 respectively, while the average widths of those in these three groups were 4.0mm±1.5 (SD), 4.6±1.4 and 7.1±2.8 respectively. The differences of average lengths and widths among these three groups were statistically significant.
社団法人日本泌尿器科学会の論文

尿路結石の臨床統計

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