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Session: ePoster: Benign Anorectal 6 (Mon1015)

EP690 - Long-term outcomes of Fistula Laser Closure (FiLaC®) with 1470-nm diode laser for cryptoglandular anal fistula

Monday, May 12, 2025
10:42 AM – 10:47 AM PT

    ePoster Presenter(s)

  • Jingyi Zhu, Master

    Department of Anorectal Surgery
    Yueyang Hospital of Integrated Chinese and Western Medicine, Affiliated to Shanghai University of Traditional Chinese Medicine
    Shanghai, Shanghai, China (People's Republic)

    All of the relevant financial relationships listed below have been mitigated.
    This individual has no financial relationships with ineligible companies.

    • Author(s)

  • ZL

    Zhicheng Li, Master

    Department of Anorectal Surgery
    Yueyang Hospital of Integrated Chinese and Western Medicine, Affiliated to Shanghai University of Traditional Chinese Medicine
    Shanghai, Shanghai, China (People's Republic)

    Disclosure information not submitted.

  • LJ

    Lei Jin, Master

    Department of Anorectal Surgery
    Yueyang Hospital of Integrated Chinese and Western Medicine, Affiliated to Shanghai University of Traditional Chinese Medicine
    Shanghai, Shanghai, China (People's Republic)

    All of the relevant financial relationships listed below have been mitigated.
    This individual has no financial relationships with ineligible companies.

    • Senior Author(s)

  • JW

    Jiong Wu, Doctor

    Department of Anorectal Surgery
    Yueyang Hospital of Integrated Chinese and Western Medicine, Affiliated to Shanghai University of Traditional Chinese Medicine
    Shanghai, Shanghai, China (People's Republic)

    All of the relevant financial relationships listed below have been mitigated.
    This individual has no financial relationships with ineligible companies.

    • Author(s)

  • Zhenyi Wang, MD,PHD (he/him/his)

    Director of Anorectal Medicine Department
    Department of Anorectal Surgery, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine
    Shanghai, Shanghai, China (People's Republic)

    All of the relevant financial relationships listed below have been mitigated.
    This individual has no financial relationships with ineligible companies.

All of the relevant financial relationships listed below have been mitigated.
Jingyi Zhu, Master: This individual has no financial relationships with ineligible companies.
Lei Jin, Master: This individual has no financial relationships with ineligible companies.
Jiong Wu, Doctor: This individual has no financial relationships with ineligible companies.
Zhenyi Wang, n/a: This individual has no financial relationships with ineligible companies.
Image or Table (Do Not add text here):

Purpose/Background: The purpose of this study was to evaluate the long-term efficacy of Fistula Laser Closure (FiLaC®）with using a 1470-nm diode laser in the treatment of cryptoglandular anal fistula.

Methods/Interventions: The data from patients with cryptoglandular anal fistula who underwent FiLaC® in our department between September 2017 and December 2019 were retrospectively analyzed. Demographic data, perioperative data and postoperative data were collected and statistically analyzed.

Results/Outcomes: A total of 52 patients who met the inclusion criteria were included in the study. The cure rates at 1month, 1 year, and 5 years were 96.2% (50/52), 82.7% (43/52), and 76.9% (40/52), respectively. Differences among internal-opening-position subgroups were statistically significant (P=0.018), with the bilateral type having a higher cure rate than the anterior and posterior type (86.2%, 75% and 37.5%, respectively). No statistically significant differences were observed among the subgroups: Parks classification, number of internal openings, closure of internal openings, treatment of internal openings, number of external openings, relative position of internal and external openings, presence of straight fistula, and presence of blind fistula. All the scores, including Visual Analog Scale pain score (VAS-PS), Cleveland Clinic Florida incontinence score (CCF-IS), and the Quality of Life in Patients with Anal Fistula Questionnaire score (QoLAF-QS), demonstrated a gradual increase over time, followed by a subsequent decline.

Conclusion/Discussion: Although the cure rate of the FiLaC® technique is inferior to that of traditional surgery, the FiLaC® technique has significant advantages in reducing the postoperative pain, the risk of fecal incontinence, and the postoperative quality of life. Furthermore, the FiLaC® technique is more suitable for cryptoglandular anal fistula with the internal opening located on both sides or behind the anal canal. This study provides a preliminary evaluation of the FiLaC® technique, and we hope to increase the cure rate in the future by observing improvements in surgical methods, laser burning power, laser burning time, and other aspects.