Associate Professor of Radiology Pardis Noor Medical Imaging and Cancer Center
DoubleJstentsplacementisthemostcommon method for relieving urinary obstruction in such cases. Double J stents are generally inserted under cystoscopic guidance via retrograde route. However, retrograde placement can be difficult or even impossible, especially in patients with obstructive malignancies.
A review of literature has shown that the rate of retrograde stenting failure is significantly higher in cases of malignant compression of ureters and that in most cases of or locally advanced prostate cancer or infiltrated bladder cancer, percutaneous nephrostomy is preferable because retrograde stenting would be impossible due to encroachment of tumor into the ureteral orifices. In patients presenting with malignant ureteric obstruction, success rates for retrograde ureteral stenting have been reported to be 50%–88%.
The percutaneous antegrade ureteral stenting technique is a relatively newer technique for ureteral stenting. It can be used as an alternative route for relieving ureteric obstruction due to malignancies.
The technical success rate of ureteral stenting in published studies which have reported varying from 85% to 98%.
All procedures were performed by an interventional radiologist using ultrasound and fluoroscopy guidance. Local analgesia with conscious sedation was used. General anesthesia was only used exceptionally on the demand of the patient. The purpose of the present study is to evaluate the indications, success rate, and complications of antegrade double J insertion.