[Percutaneous placement of ureteral prostheses. 150 cases]

Percutaneous placement of ureteral stents was attempted on 150 occasions with an 85 p. 100 success rate. Whether released or not, this type of prosthesis ensures that the urine is drained internally from kidney to bladder. Stenting is effective as palliative treatment of malignant stenosis or curative treatment of benign stenosis, as it maintains the ureteral lumen diameter after balloon catheter dilatation. It also dries up post-operative urinary fistulae and it controls and promotes their healing. Because of the satisfactory results obtained, the percutaneous technique is increasingly preferred to surgery performed under difficult conditions.