肛瘘的术前MRI表现与手术结果的对照分析

目的 探讨术前MRI检查对肛瘘诊断及分型的价值.方法 回顾性分析经手术证实的36例肛瘘患者的临床资料及MRI表现,并与手术结果对照分析,总结肛瘘的MRI表现特点及应用价值.结果 36例肛瘘手术显示内口42个,主瘘管45条、瘘管分支15条,外口42个,脓肿16个.与手术结果对照,MRI显示肛瘘内口的准确率为90.5%(38/42个),显示瘘管分支的准确率为80%(12/15条),显示主瘘管、外口及脓肿的准确率均为100%.按照Parks分型,MRI分型符合率为88.9%(32/36例).结论 MRI能准确显示肛瘘内、外口的位置,瘘管的数量及走行,能够对肛瘘进行准确分型.

Comparative analysis of preoperative MRI findings and surgical results in anal fistula

Objective To study the value of preoperative MRI in diagnosing and typing anal fistula.Methods The clinical data and MRI findings of 36 operated patients with anal fistula were analyzed retrospectively, and compared with pathological results of the operations, the manifestation and application value of MRI in anal fistula were summarized.Results 36 cases of anal fistula showed 42 internal openings,45 primary tracts,15 small tracts,42 external openings,16 abscesses.Compared with surgical results, the accuracy of MRI was 90.5%(38/42) for internal openings,80%(12/15) for small tracts,100% for primary tracts, external openings and abscesses respectively.According to the Parks type, the coincidence of MRI classification was 88.9%(32/36).Conclusion MRI can accurately display the position of the internal and external openings, the number and form of the tracts, and type about anal fistula.