上部尿路結石の再発について

Abstract

1) 1976年3月より8年9月間に入院した上部尿路結石症例の退院後の再発を調査した.2)全634例のうち, 調査対象となったのは325例であり, 再発率は2年15.6%, 5年27.6%, 8年51.4%であった.3)再発結石例は初発結石例に比し, その後の再発頻度は明らかに大であった.4)手術既往のある腎結石に尿路感染を合併した時は, 結石の成長は加速された.5)結石成分中, 尿酸結石例は再発率が大なる傾向がうかがわれた.6)腎結石に対して, 腎実質切開群は腎盂切開群に比して再発率は大であった

Treatment of upper urinary tract stones has changed greatly. The recurrence of calculi after the discharge was studied in the 634 patients with urolithiasis admitted to our department during the 9 years up to the end of 1984. The recurrence rate in the 325 cases followed for more than 3 months after the disappearance of the original stones, was 15.6% after 2 years, 27.6% after 5 year and 51.4% after 8 years. In recurrent stone formers, the rate of recurrence thereafter was greater than that of primary stone formers. The growth of calculi was rapid in the renal stone former concomitant with urinary tract infection together with a past history of renal surgery. In relation to the composition of the stone, uric acid calculi tended to recur more often than calculi composed of other substances. In view of recurrence, pyelolithotomy is preferred to renal parenchymal incision.