Ureteral stenosis refers to the normal stenosis of the whole or part of the lumen leading to ureter due to various reasons.

Repeated causes after ureter, it is easy to cause repeated stricture and obstruction for various reasons:

1, insufficient excision of scar tissue around urethra, failure to achieve anastomosis between urethral mucosa and mucosa, resulting in contracture of scar tissue of posterior urethra; 2. Incomplete urethral separation will increase the tension of anastomosis, and postoperative anastomotic tear is another cause of posterior urethral stricture;

3. Stenosis complicated with urinary fistula. Inflammatory hyperplasia stimulated by urine aggravates ureteral stricture, and even manifests as periureteral fibrosis.

suggestion

Ureteral stricture can be dilated by balloon and supported by ureteral stent for a long time. The narrow ureter can be opened by balloon, and the stent can be kept for a long time. 1-2 years later, the ureteral scar and the scar structure around the ureter will remain stent-like and will not retract. At this time, the ureteral stent can be pulled out.