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目的探讨经直肠新型360°环阵腔内超声对肛瘘的诊断价值。方法收集2014年6月~2015年5月期间肛瘘患者64例,术前超声Parks分型与术后手术记录Parks分型对照。结果经直肠腔内超声能清晰显示内外括约肌。手术64例患者中,41例单纯性肛瘘,23例为复杂性肛瘘,其中括约肌间型29例,经括约肌型17例,扩约肌上型10例,括约肌外型8例。64例肛瘘共86个原发瘘管,89个内口,80个外口,42个肛周脓肿,超声对原发瘘管、肛周脓肿、内口显示的灵敏度分别为89.5%、100%和88.2%,特异度分别为91.5%、97.5%、86.3%。结论 360°经直肠腔内超声诊断肛瘘具有简便、实时、易操作等特点,能清楚显示内外括约肌,能为术前肛瘘的准确定位提供极有帮助的影像学信息,从而具有较高临床价值。
Objective To investigate the diagnostic value of transanal new 360 ° circular intracavitary sonography for anal fistula. Methods Sixty-four patients with anal fistula between June 2014 and May 2015 were collected. Parks classification was compared with Parks classification and preoperative Parks classification. Results Transrectal intracavitary ultrasound can clearly show the internal and external sphincter. Among the 64 patients, 41 were simple anal fistulas and 23 were complicated anal fistulas. Among them, 29 were sphincteric stenoses, 17 were sphincter stenoses, 10 were sphincteric stenoses and 8 were sphincters. There were 86 primary fistulas, 89 internal fissures, 80 external foramen and 42 perianal abscesses in 64 cases of anal fistula. The sensitivity of ultrasonic examination to primary fistula, perianal abscess and internal mouth were 89.5%, 100% and 88.2 %, Specificity were 91.5%, 97.5%, 86.3% respectively. Conclusion The diagnosis of anal fistula by 360 ° transthoracic ultrasonography is simple, real-time and easy to operate. It can clearly show the internal and external sphincter, which can provide helpful imaging information for preoperative anal fistula. It has high clinical value.