Benign proctology
- Long-term outcomes after anal fistula surgery: results from two university hospitals in Thailand
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Weeraput Chadbunchachai, Varut Lohsiriwat, Krisada Paonariang
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Ann Coloproctol. 2022;38(2):133-140. Published online June 7, 2021
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DOI: https://doi.org/10.3393/ac.2021.01.06
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 Abstract
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- Purpose
This study aimed to evaluate long-term outcomes after anal fistula surgery from university hospitals in Thailand.
Methods
A prospectively collected database of patients with cryptoglandular anal fistula undergoing surgery from 2011 to 2017 in 2 university hospitals was reviewed. Outcomes were treatment failure (persistent or recurrent fistula), fecal continence status, and chronic postsurgical pain.
Results
This study included 247 patients; 178 (72.1%) with new anal fistula and 69 (27.9%) with recurrent fistula. One hundred twenty-one patients (49.0%) had complex fistula; 53 semi-horseshoe (21.5%), 41 high transsphincteric (16.6%), 24 horseshoe (9.7%), and 3 suprasphincteric (1.2%). Ligation of intersphincteric fistula tract (LIFT) was the most common operation performed (n=88, 35.6%) followed by fistulotomy (n=79, 32.0%). With a median follow-up of 23 months (interquartile range, 12–45 months), there were 18 persistent fistulas (7.3%) and 33 recurrent fistulae (13.4%)—accounting for 20.6% overall failure. All recurrence occurred within 24 months postoperatively. Complex fistula was the only significant predictor for recurrent fistula with a hazard ratio of 4.81 (95% confidence interval, 1.82–12.71). There was no significant difference in healing rates of complex fistulas among seton staged fistulotomy (85.0%), endorectal advancement flap (72.7%), and LIFT (65.9%) (P=0.239). Four patients (1.6%) experienced chronic postsurgical pain. Seventeen patients (6.9%) reported worse fecal continence.
Conclusion
Overall failure for anal fistula surgery was 20.6%. Complex fistula was the only predictor for recurrent fistula. At least 2-year period of follow-up is suggested for detecting recurrent diseases and assessing patient-reported outcomes such as chronic pain and continence status.
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Citations
Citations to this article as recorded by  - The Clinical Utility of Anorectal Manometry: A Review of Current Practices
Eleanor Aubrey Belilos, Zoë Post, Sierra Anderson, Mark DeMeo
Gastro Hep Advances.2025; 4(2): 100562. CrossRef - Mucosal advancement flap versus ligation of the inter-sphincteric fistula tract for management of trans-sphincteric perianal fistulas in the elderly: a retrospective study
Tamer A. A. M. Habeeb, Massimo Chiaretti, Igor A. Kryvoruchko, Antonio Pesce, Aristotelis Kechagias, Abd Al-Kareem Elias, Abdelmonem A. M. Adam, Mohamed A. Gadallah, Saad Mohamed Ali Ahmed, Ahmed Khyrallh, Mohammed H. Alsayed, Esmail Tharwat Kamel Awad, M
International Journal of Colorectal Disease.2025;[Epub] CrossRef - Exploring Health-Related Quality of Life in Patients with Anal Fistulas: A Comprehensive Study
Tudor Mateescu, Lazar Fulger, Durganjali Tummala, Aditya Nelluri, Manaswini Kakarla, Lavinia Stelea, Catalin Dumitru, George Noditi, Amadeus Dobrescu, Cristian Paleru, Ana-Olivia Toma
Life.2023; 13(10): 2008. CrossRef - Lower Fistula Recurrence with Pulling Seton: A Retrospective Cohort Study
Ahmad Izadpanah, Ali Reza Safarpour, Mohammad Rezazadehkermani, Ali Zahedian, Reza Barati-Boldaji
Shiraz E-Medical Journal.2022;[Epub] CrossRef
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