自從體外電震波碎石術的引用，輸尿管結石的治療有相當大的改變。然而對於定位有困難的或者箝制性(impacted stones) 的輸尿管結石使用體外電震波碎石術仍然是個問題。以對於這些結石的治療，使用內視鏡碎石術是必要的。從1990年4月至1990年7月共有44位輸尿管結石的病患接受治療。結石大小從6mm到30mm不等，平均為17.03mm。結石負荷(stone burden)的定義為所有結石長和寬的總和，以mm表示。治療成功的病患有40位佔90.9％。所有的輸尿管結石都能以雷射加以擊碎。治療的過程中所發生的併發症以暫時性血尿佔最多有38位，發燒有3位，輸尿管及膀胱交界處狹窄有1位。結論：脈衝式染料雷射碎石術在治療尿管結石為一安全又有效的方法。

Forty-four patients with ureteral stone were treated with Candela MDL-2 pulsed dye laser from April to July 1990. Of 44 patients, 40 (90.9%) were considered success-ful. All ureteral stones were disintegrated successfully. The complications of ureterolaser-tripsy included transient hematuria in 38, postoperative pyrexia in 3 and UVJ stenosis in 1 patient. The pulsed dye laser lithotripsy was proved an effective and safe method of treating ureteral stones. (J Urol R.O.C., 2:378-381, 1991)