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  3. Vol. 19 No. 02 (2022): March-April 2022
  4. ORIGINAL PAPER (ENDOUROLOGY AND STONE DISEASE)

ISSN: 1735-1308

March-April 2022
Vol. 19 No. 02 (2022)

Risk Factors for Failure of Endoscopic Management of Stone-related Ureteral Strictures

  • Teruaki Sugino
  • Kazumi Taguchi
  • Shuzo Hamamoto
  • Tomoki Okada
  • Masahiko Isogai
  • Yutaro Tanaka
  • Rei Unno
  • Yasuhiro Fujii
  • Takashi Hamakawa
  • Ryosuke Ando
  • Atsushi Okada
  • Takahiro Yasui

Urology Journal, Vol. 19 No. 02 (2022), , Page 95-100
https://doi.org/10.22037/uj.v18i.6697 Published 25 August 2021

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Abstract

Purpose: To investigate factors determining the outcomes of endoscopic management for stone-related ureteral stricture.
Materials and Methods: Data of patients who underwent endoscopic surgery for ureteral stricture due to stones from January 2016 to April 2020 were retrospectively analyzed. We compared cases successfully treated with endoscopic surgery with cases that resulted in failure. We focused on factors associated with treatment success, including cause and length of stricture, methods of stricture treatment, surgical time, and duration of hydronephrosis before the treatment. Treatment success was defined as improvement in hydronephrosis status.
Results: Nineteen patients were treated for stone-related ureteral stricture. Hydronephrosis was successfully improved in 12 patients (63.2%). Seven patients with failed endoscopic management had ureteroscopic lithotripsy- related stricture, whereas 3/12 (25.0%) patients with ureteroscopic lithotripsy-related stricture and 7/12 (58.3%) patients with impacted stone-related stricture were successfully treated by endoscopic management (P = .004). The prevalence of stricture length > 15 mm was significantly higher in the patients with failed management than in the patients with successful management (71.4 vs 16.6%, P = .046). Intraoperative endoscopic observation demonstrated that the mucosa of the ureteroscopic lithotripsy-related stricture had ischemic appearance with relatively long stricture length (P = 0.13) compared to the impacted stone-related stricture. No association was observed between treatment outcome and method of endoscopic management, including laser incision, balloon dilation, or
both.
Conclusion: Ureteroscopic lithotripsy as a cause and stricture length > 15 mm could affect the success rate of
endoscopic management of ureteral stricture. In such cases, reconstructive management should probably be considered in the early stages.

Keywords:
  • ureteroscopy, ureteral stricture, impacted stones, hydronephrosis
  • 6697/pdf

How to Cite

Sugino, T., Taguchi, K., Hamamoto, S., Okada, T., Isogai, M., Tanaka, Y., Unno, R., Fujii, Y., Hamakawa, T., Ando, R., Okada, A., & Yasui, T. (2021). Risk Factors for Failure of Endoscopic Management of Stone-related Ureteral Strictures. Urology Journal, 19(02), 95-100. https://doi.org/10.22037/uj.v18i.6697
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