Clinical value of magnetic resonance imaging in the diagnosis of complex anal fistula / 中国基层医药

ABSTRACT

Objective To evaluate the clinical value of magnetic resonance imaging in the diagnosis of complex anal fistula. Methods 80 patients with complex anal fistula were selected,and they were randomly divided into observation group(n=40) and control group(n=40) according to the digital table. The control group was treated according to the clinical experience of the physician,after the anus-related examination,combined with intraoperative methylene blue staining guidelines for surgical treatment. The observation group received the magnetic resonance imaging before operation,followed by the same steps as the control group. The number and accuracy of the anorectal fistula were compared between the two groups. The complication rate,the number of reoperation and the recurrence rate were analyzed. Results The number of incisors in the anal fistula in the observation group was (2. 1 ± 0. 2), which was significantly higher than (1.5 ±0.1) in the control group (t=16.971,P<0.05). The accuracy rate of anal mouth in the observation group was 95. 0%,which was significantly higher than 52. 5% in the control group (χ2 =16.529,P<0.05).Thepostoperativehealingtimeoftheobservationgroupwas(12.7±2.1)days,whichwas significantly shorter than (16. 7 ± 2. 5) days of the control group(t =8. 523,P <0. 05). The incidence rate of bleeding,infection,anal leakage and anal fecal in the observation group was 5. 0%,which was significantly lower than 30. 0% in the control group (χ2 =7. 013,P<0. 05). And the rate of reoperation of the observation group was 2. 5%, which was significantly lower than 22. 5% of the control group(χ2 =5. 600,P <0. 05). Conclusion For anal fistula, especially complex anal fistula, magnetic resonance imaging before operation can effectively clear the distribution of fistula, provide effective guidance to surgical treatment, thereby improving the surgical results and reduce surgical complications.