Transvaginal or perineal ultrasound end-scan convex array probe in localization of internal orifice of female anal fistula / 中国医学影像技术

ABSTRACT

Objective: To explore the value of transvaginal or perineal ultrasonography end-scan convex array probe in localization of internal orifice of female anal fistula. Methods: Seventeen patients with anal fistulas (case group) and 15 women in control group were examined with 3-10 MHz end-scan convex array ultrasound probe before operation, and the findings were compared with surgical results. Results: All subjects could tolerate ultrasonic examinations. There were totally 18 anal fistula internal orifices among 17 patients in case group, among which 16 were found with ultrasound before operation, and the coincidence rate of ultrasonic diagnosis with surgical operation was 88.89% (16 /18). In control group, three-layer structure of anal canal could be clearly displayed. Conclusion: Transvaginal or perineal ultrasonography end-scan convex array probe has high clinical value in localization of internal orifice of female anal fistula.