title: Covered metallic ureteral stent in the management of malignant ureteral obstruction: preliminary results.
abstract: OBJECTIVE
  To evaluate the effectiveness of ureteral Dacron-covered metallic stents in the management of malignant ureteral obstruction.
  
  
  METHODS
  Covered metallic stents were placed unilaterally using a percutaneous approach in an antegrade fashion into nine ureters of 8 patients with bilateral malignant ureteral obstruction. The contralateral kidneys were drained by percutaneous nephrostomy in 7 patients. The primary diagnoses were rectal cancer in 5 patients and cervical, bladder, and prostate cancers in the remaining cases.
  
  
  RESULTS
  Covered metallic stents could be successfully placed in all patients. Only one of nine ureters was stented with a double J-stent. In a mean follow-up of 9 months (range 1 to 14), 7 of 8 patients died because of their primary disease. During the follow-up period, none of the stents were obstructed, displaced, or infected.
  
  
  CONCLUSIONS
  Dacron-covered metallic stents appear to be successful in the treatment of patients with malignant ureteral obstruction. The preliminary outcome encourages and justifies the application of this drainage method.
authors.affiliation: Department of Urology, Başkent University School of Medicine, Ankara, Turkey.
authors.forename: M I
authors.initials: MI
authors.lastname: Tekin
authors.forename: C
authors.initials: C
authors.lastname: Aytekin
authors.forename: C
authors.initials: C
authors.lastname: Aygün
authors.forename: L
authors.initials: L
authors.lastname: PeSkircioğlu
authors.forename: F
authors.initials: F
authors.lastname: Boyvat
authors.forename: H
authors.initials: H
authors.lastname: Ozkardeş
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009403:Nephrostomy, Percutaneous; D011093:Polyethylene Terephthalates; D011471:Prostatic Neoplasms / Q000150:complications; D012004:Rectal Neoplasms / Q000150:complications; D015607:Stents; D014517:Ureteral Obstruction / Q000209:etiology / Q000628:therapy*; D001749:Urinary Bladder Neoplasms / Q000150:complications; D002583:Uterine Cervical Neoplasms / Q000150:complications
chemical_list: D011093:Polyethylene Terephthalates