Clinical data analysis of 40 cases of ureteral stricures treated by ureteroscopic retrograde balloon dilation

Abstract

Objective To analyze the factors influencing the prognosis of benign ureteral stricture which treated by retrograde balloon dilatation in ureteroscopy. Methods Forty patients with benign unilateral ureteral stricture who underwent retrograde ureteral balloon dilatation from October 2012 to October 2016 in our department were retrospectively reviewed. Age ranged from 25 to 76 years old. Twelve cases whose ureter stenosis located at the junction of the renal pelvis, 8 cases at the upper ureter, 3 cases at the middle and 17 cases at the lower part. The length of the ureteral stricture was between 0.2 cm and 2 cm. All patients were treated with U30 ureteroscopic balloon dilation catheter, and double J stent or hippocampus ureteral stent was implanted for 6 months to 1 year after operation. The stent was replaced every 3 months and all patients were followed up for one year postoperatively. Result The operation time was between 45-90 min, with an average of 60 min. Patients spent an average of 2.5 days in the hospital after operation. There was no severe complication occurred, and the most common type of complications were hematuria and urinary tract irritation. During one year postoperative follow up, 25 patients (62.5%) were successfully treated with ureteral stricture and 15 cases (37.5%) of treatment failure were observed. Univariate Chi-square test and multivariate logistic regression analysis showed that length of ureteral stricture and degree of hydronephrosis were the main factors affecting the prognosis of surgery (P 0.05). Conclusion Ureteroscopic balloon dilatation isa safe and effective surgical treatment for benign ureteral stricture. Key words: Ureteral stenosis; Balloon dilation; Multivariate Logistic regression analysis