Clinical application of DSA-guided percutaneous nephrostomy combined with cystoscopy for ureteral stent placement in iatrogenic ureteral injury after gynecological surgery
ZHENG Wenheng1, YU Tao1, LUO Yahong1, BI Huan2, ZHANG Zhaohe3, HUANG Yan2, MU Zhongyi2
1Department of Medical Imaging, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang 110042, China; 2Department of Urology Surgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute; 3China Medical University
Abstract:Objective: To study the safety and feasibility of percutaneous nephrostomy combined with cystoscopy for ureteral stent placement in iatrogenic ureteral injury after gynecological surgery. Methods: Seven cases of ureteral injury after gynecological surgery at the Liaoning Provincial Cancer Hospital from August 2015 to September 2017 (aged 38-62 years) were included. The vaginal urinary fistulae were observed after gynecologic laparoscopic surgery. The operation of percutaneous nephrostomy puncture was performed under ultrasound guidance in all cases, and the operation of guide wire was guided by X-ray fluoroscopy. The surgical procedures were as follows: (1) The wire guided by the cystoscopy was tried to pass through the lesion area of the ureter retrogradely. (2) If the procedure 1 was failed, the catheter was placed under the cystoscope to mark the lesion. Percutaneous nephrostomy puncture was performed and the wire was tried to pass through the lesion area through this pathway. (3) If the procedures 1 and 2 were failed, the wire of the antegrade approach and the retrograde approach was circumscribed out of the body through the vaginal stump, and the catheters were exchanged. After the guide wire passed though the lesion area, the ureteral stent was placed under the cystoscope. Results: The ureteral stents were successfully placed in the 7 cases of ureteral injury, and vaginal leakage stopped after 1-3 days. No complications such as operation-related infection, stent displacement, and severe bleeding were observed. During the follow-up period of 12 months, 5 of them underwent stage II ureter repair surgery and recovered well; 2 patients refused to undergo repair surgery, and stent catheter was replaced under regular cystoscopy every 3 months. No vaginal urinary fistula was seen after 3 months. Conclusions: The operation of ureteral stent placement through percutaneous nephroscopy combined with cystoscopy is safe and minimally invasive method with lower medical expense, and may be useful for iatrogenic ureteral injury.
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