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  • Title: Implementation of laser ablation of fistula tract (LAFT) for perianal fistulas: do the results warrant continued application of this technique?
    Author: Stijns J, van Loon YT, Clermonts SHEM, Gӧttgens KW, Wasowicz DK, Zimmerman DDE.
    Journal: Tech Coloproctol; 2019 Dec; 23(12):1127-1132. PubMed ID: 31781883.
    Abstract:
    BACKGROUND: Laser Ablation of Fistula Tract (LAFT) is a novel technique for the treatment of perianal fistulas. Initial reports have shown moderate-to-good results. The aim of this study was to evaluate this implementation and the effectiveness of this technique. Patients were offered LAFT as a treatment option for their perianal fistulas at the outpatient clinic between November 2016 and April 2018. Inclusion criteria were intersphincteric and transsphincteric fistula of cryptoglandular origin [10]. Exclusion criteria were supra- or extrasphincteric fistula, Crohn's disease, presence of undrained collections or side tracts and malignancy-related fistula. The primary outcome was fistula healing rate, the main secondary outcome incidence of postoperative fecal incontinence. Healing and postoperative FISI were evaluated at our outpatient clinic during follow-up at 6 and 12 weeks. A questionnaire was sent to all patients to evaluate the long-term postoperative FISI and patient satisfaction after 3 months. RESULTS: Between November 2016 and April 2018, 20 patients [m:f = 4:16, median age 45 (27-78) years] underwent LAFT. Median follow-up was 10 months (IQR 7.3 months). A draining seton was placed in 15 (75%) of all patients with a median time of 12 weeks (IQR 14 weeks) prior to LAFT. Five intersphincteric and 13 transsphincteric fistulas were treated. Overall healing rate was 20% (4/20). The median postoperative fecal incontinence severity index (FISI) score was 0 (range 0-38); however, we found a change in continence in 39% of the patients. CONCLUSIONS: LAFT has now been discontinued as a treatment of cryptoglandular perianal fistulas in our centre, because of its disappointing results. Further detailed research seems to be warranted to investigate its exact indication and limitations.
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