放射線透過性上部尿路結石に関する臨床統計的観察

Abstract

A statistical study was performed on 170 patients with radio-transparent calculi of the upper urinary tract, which were treated during a II-year period from 1968 to 1978 in my department. The results were as follows; 1) The patients with radio-transparent calculi accounted for 10.9% of all patients with the upper urinary tract calculi. The major composition of these calculi was uric acid. The ratio of males to females was 5 to 1. 2) In most cases the diagnosis was confirmed by conventional urography in the presence of nonopaque filling defects. The rate of the wrong diagnosis was 11.7%. 3) The serum uric acid of the patients with uric acid stones was significantly higher than that of calcium stone formers and of controls (p<0.05). The urinary uric acid was significantly high, also. The rate of the patients with hyperuricemia was 37.4% and that of hyperuricosuria was 26.5%. In the data of blood non-protein nitrogen and serum creatinine no significant difference was observed. The rate of the nonnouricemic and normouricosuric patients without gout or renal insufficiency was 41.4%, and these patients had to be diagnosed carefully. 4) 163 patients were medically treated with and without surgical treatmcnt during an average of 8.9 months, and approximately half of them were cured by medical treatment only. The overall rate of cure except for unknown cases was 72.3%.