Application value of MRI examination in the diagnosis of complex anal fistula
[Objectives] To investigate the application value of MRI examination in the diagnosis of complex anal fistula. [Methods] A retrospective analysis was conducted on the clinical data of 62 patients with complex anal fistula admitted to the Department of Proctology, Suzhou TCM Hospital Affiliated to Na...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Colorectal & Anal Surgery
2023-10-01
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| Series: | 结直肠肛门外科 |
| Subjects: | |
| Online Access: | https://jcas.gxmuyfy.cn/cn/wqll/paper.html?id=190&cateName=2023%E5%B9%B4%20%E7%AC%AC29%E5%8D%B7%20%E7%AC%AC5%E6%9C%9F |
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| Summary: | [Objectives] To investigate the application value of MRI examination in the diagnosis of complex anal fistula. [Methods] A retrospective analysis was conducted on the clinical data of 62 patients with complex anal fistula admitted to the Department of Proctology, Suzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine from January 2020 to December 2020. All patients underwent MRI examination one week before surgery. Taking the intraoperative exploration results as the reference, the accuracy of MRI in diagnosing complex anal fistula was compared and analyzed. [Results] Among the 62 patients, MRI examination showed 71 main fistulas, 67 internal openings, 24 branch fistulas, and 15 patients with abscesses. According to the Parks Classification, 4 suprasphincteric, 42 intersphincteric, 2 extrasphincteric, and 14 transsphincteric were diagnosed by MRI examination. During intraoperative exploration, 71 main fistulas, 68 internal openings, 26 branch fistulas, 15 patients with abscesses, 6 suprasphincteric, 46 intersphincteric, 2 extrasphincteric, and 17 transsphincteric were confirmed. Using surgical findings as the reference standard, the accuracy rates of MRI examination were 100%, 98.5%, 92.3% and 100% for detecting the main fistula, internal stoma opening, branching fistula and abscess, respectively. The accuracy rates of Parks classification in diagnosing complex anal fistula were 66.7%, 91.3%, 100% and 82.4%, respectively. [Conclusion] Preoperative MRI examination demonstrates a high diagnostic accuracy rate for identifying the main fistula, branch fistula, internal opening and abscess of complex anal fistula. However, it is noteworthy that there is a degree of error in the diagnosis of the Parks Classification of anal fistula, particularly in the case of suprasphincteric anal fistula. |
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| ISSN: | 1674-0491 |