Is neutrophil to lymphocyte ratio a predictive factor for recurrence of urethral stricture?


Urkmez A., Topaktas R., Ozsoy E., Tokuc E., Kutluhan M. A. , Artuk I., ...More

Revista da Associacao Medica Brasileira, vol.65, no.12, pp.1448-1453, 2019 (Journal Indexed in SCI Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 65 Issue: 12
  • Publication Date: 2019
  • Doi Number: 10.1590/1806-9282.65.12.1448
  • Title of Journal : Revista da Associacao Medica Brasileira
  • Page Numbers: pp.1448-1453

Abstract

© 2019 Associacao Medica Brasileira. All rights reserved.INTRODUCTION: Due to spongiofibrosis and inflammatory processes underlying the pathogenesis of urethral stricture, it is possible that the neutrophil-lymphocyte ratio (NLR) may give essential information about the course of the disease and recurrence possibilities. Our study aims to evaluate the correlation between NLR and recurrence rates. METHODS: A total of 512 patients who underwent direct visual internal urethrotomy (DVIU) due to urethral stricture in our clinic between February 2010 and January 2018 were evaluated retrospectively. RESULTS: The median follow up for non-recurrent and recurrent groups after DVIU was 30 and 36 months, respectively. During the follow-up, 280 (54.7%) of the patients had recurrences, and 232 (45,3%) had no recurrences. The mean time for recurrence after DVIU was 6,5±1,4 months, with a range of 1-36 months. The mean NLR in the non-recurrence group was 2,02±0,87, with a median of 1.9, and 3,66±2,30, with a median of 3 in the recurrence group. A highly significant statistical difference was observed between two groups in terms of neutrophil count and NLR (p: 0.000 – both). The area under curve value for NLR was 0.767, with a standard error of 0.021 (95% CI 0.727-0.808). The cut-off value of NLR was determined as 2.25, with a 70% sensitivity and 67,7% specificity. CONCLUSION: By using NLR, the inflammatory features of the urethral tissue can be predicted, and possible recurrences after surgery can be estimated. Consequently, open urethroplasty techniques can be used in cases with a significant NLR value instead of the recurrent endoscopic procedure.