Influence of tract location on the outcomes of endoscopic combined intrarenal surgery: A retrospective analysis of 1000 cases

Author:

Tabei Tadashi12ORCID,Ito Hiroki23,Inoue Takaaki4ORCID,Watanabe Takahiko2,Fukuda Tetsuo5,Yamamichi Fukashi4ORCID,Matsuzaki Junichi5ORCID,Kobayashi Kazuki2

Affiliation:

1. Department of Urology Fujisawa Shounandai Hospital Fujisawa Kanagawa Japan

2. Department of Urology Yokosuka Kyosai Hospital Yokosuka Kanagawa Japan

3. Department of Urology Yokohama City University Graduate School of Medicine Yokohama Kanagawa Japan

4. Department of Urology Hara Genitourinary Hospital Kobe Hyogo Japan

5. Department of Urology Ohguchi Higashi General Hospital Yokohama Kanagawa Japan

Abstract

ObjectivesThis study aimed to investigate the influence of tract location on surgical outcomes in endoscopic combined intrarenal surgery (ECIRS), considering the location of residual stones.MethodsFrom January 2015 to December 2021, 1417 consecutive patients underwent ECIRS in three hospitals. After excluding patients with preoperative percutaneous nephrostomy, intended multi‐stage procedures, those with a tract in the renal pelvis, and those with multiple tracts, 1000 patients were retrospectively analysed by comparing three groups based on tract location: group 1 (upper calyx), group 2 (middle calyx), and group 3 (lower calyx). A multivariate logistic regression model was implemented to assess whether the tract location independently affected the stone‐free status.ResultsPatient characteristics were significantly different among the groups in terms of age, stone laterality, presence of calyceal stones, and hydronephrosis. There were no differences in stone‐free rate (SFR) among the three groups. Multivariate analysis indicated that the tract location (group 1 or 2 compared with group 3) did not significantly affect the stone‐free status (odds ratio = 1.4, 0.9–1.9, p = 0.066). Surgical duration significantly varied among the groups, with the shortest time observed in group 1. Organ injury was observed exclusively in group 1 (1.13%). Residual fragments were predominantly found in the lower calyx, with the calyx associated with the tract being the second most common location.ConclusionsTract location does not significantly affect SFR. To improve the SFR, observation of the lower calyx and tract placement is important.

Publisher

Wiley

Subject

Urology

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