Abstract:Abstract: Objective To study clinical experiences and outcomes of metallic ureteral stent with different method in treating the patients of malignant ureteral obstruction. Method The retrospective study enrolled 14 patients of abdominal or pelvic malignant tumor received metallic ureteral stent placement because of ureteral obstruction from Jun 2014 to Aug 2018. Its operation methods are listed as followed: metallic ureteral stent placement under cystoscope or ureteroscopy, nephroscope through anterograde approach, and bladder incision. Outcomes and complications were observed during follow-up. Results All the operations in this group were successful, the kidney seeper was improved. Respectively analyze the creatinine value before surgery and at day 7 after surgery was (351.55 ± 196.50) μmol/L, (124.85 ± 39.15) μmol/L, there is statistically significant (P = 0.014). The mean follow-up was 11 months. The average retention time of metallic stent was about 12 months, and the longest was about 2 years. No secondary obstruction occurred after the operations, 2 cases died, 12 survived. The KUB showed that no fracture, displacement, loss of function and stone were found in the metallic stents to patients reviewed from outpatients, and they had no poor drainage, no obviously uncomfortable feeling. 2 cases occurred intermittent hematuria, and 1 case occurred repeated urinary tract infections after operation. The other 1 case was in poor condition and were not reviewed on time. Conclusions Metallic ureteral stents are safe and effective for patients of malignant ureteral obstruction. Due to different operation conditions,different methods can be selected flexibly.