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[Treatment of ureteral obstruction with auto-expandable metallic endoprosthesis].

AbstractOBJECTIVE:
To evaluate the efficacy of Nitinol (Memotherm) self-expandible metal stents in the treatment of malignant and non-malignant ureteral obstruction in patients who are not eligible for surgery.
METHODS:
A total of 14 ureteral strictures (5 malignant, 9 non-malignant) in 13 patients were treated by the implantation of a Nitinol endoprosthesis. Eight were implanted by the antegrade and 6 by the retrograde route. A mean of 1.3 stents were implanted per patient.
RESULTS:
85% of the stents were patent at a mean follow-up of 10.2 months (range 2-28). Four prostheses developed transient obstruction that was resolved by insertion of a double-J catheter for periods that ranged from 2 to 6 months. One stent required a permanent double-J catheter and another stent showed functional obstruction, although it was morphologically patent.
CONCLUSION:
The Nitinol self-expandible metal stent is effective in the treatment of malignant and non-malignant ureteral obstructions in patients who are not eligible for surgery due to the tumor stage or high surgical risk.
AuthorsF J Burgos Revilla, V Gómez Dosantos, C Carrera Puerta, M Sánchez Encinas, J Pascual Santos, T Llorente, A Escudero Barrilero
JournalArchivos espanoles de urologia (Arch Esp Urol) Vol. 52 Issue 4 Pg. 363-71; discussion 371-2 (May 1999) ISSN: 0004-0614 [Print] Spain
Vernacular TitleTratamiento de la obstrucción ureteral mediante endoprótesis metálicas autoexpandibles.
PMID10380326 (Publication Type: Clinical Trial, Journal Article)
Chemical References
  • Alloys
  • nitinol
Topics
  • Adult
  • Aged
  • Aged, 80 and over
  • Alloys
  • Female
  • Humans
  • Male
  • Middle Aged
  • Stents
  • Ureteral Obstruction (therapy)

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