Analysis of MRI features and risk factors of recurrent anal fistula
LI Yao
GONG Xijun
RUAN Zhenping
Abstract：Objective To analyze the MRI features and risk factors of recurrent anal fistula.Methods The clinical data of 120 patients with anal fistula who underwent surgical treatment at the First Affiliated Hospital of Anhui University of Chinese Medicine from May 2016 to May 2025 were retrospectively analyzed.According to the occurrence of anal fistula,the patients were divided into the recurrent group(n=40)and the newly diagnosed group(n=80).MRI features and general data of the two groups were comparatively analyzed.Multivariate logistic regression was used to analyze the influencing factors of recurrent anal fistula.Results The proportions of patients with high anal fistula,number of fistulas>1,course of disease>1 year,and history of anorectal surgery in the recurrent group were higher than those in the newly diagnosed group(P<0.05).Multivariate logistic regression analysis showed that high anal fistula(OR=1.471,95%CI:1.177-1.839),number of fistulas>1(OR=1.527,95%CI:1.209-1.928),course of disease>1 year(OR=1.508,95%CI:1.221-1.864),and history of anorectal surgery(OR=1.496,95%CI:1.201-1.864)were risk factors for recurrent anal fistula(P<0.05).Conclusion Recurrent anal fistula exhibits certain features on MRI.The location of anal fistula,number of fistulas,course of disease,and history of anorectal surgery are factors influencing recurrent anal fistula.Targeted prevention and control measures should be developed based on above factors to reduce postoperative recurrence risk.
Keywords：recurrent anal fistulaMRI featurerisk factor
Publication Date：2025-11-20
Online Publishing Date：2025-12-16(First online date of this platform, not the publication date of the document)
Pages：6( 1392-1397 )