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Preoperative magnetic resonance imaging of anal fistulas with scrotal extension: a retrospective study
INTRODUCTION: This study aimed to elucidate the magnetic resonance (MR) characteristics of anal fistulas extending to the scrotum, and the applicable rules, and to correlate MR features with surgical findings. METHODS: We conducted a retrospective study in 150 consecutive patients with anal fistulas...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10397721/ https://www.ncbi.nlm.nih.gov/pubmed/37545842 http://dx.doi.org/10.3389/fsurg.2023.1224931 |
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author | Vo, Duc Tan Nguyen, Truc Thi Thuy Nguyen, Nam Hoang Nguyen, Linh Thi Thuy Nguyen, Thien Thi Thanh Phan, Chien Cong |
author_facet | Vo, Duc Tan Nguyen, Truc Thi Thuy Nguyen, Nam Hoang Nguyen, Linh Thi Thuy Nguyen, Thien Thi Thanh Phan, Chien Cong |
author_sort | Vo, Duc Tan |
collection | PubMed |
description | INTRODUCTION: This study aimed to elucidate the magnetic resonance (MR) characteristics of anal fistulas extending to the scrotum, and the applicable rules, and to correlate MR features with surgical findings. METHODS: We conducted a retrospective study in 150 consecutive patients with anal fistulas extending into the scrotum, who were diagnosed and underwent surgery at University Medical Center Ho Chi Minh City between January 2017 and April 2022. MR findings were evaluated and compared with surgical findings using Cohens kappa coefficient (k) with a 95% confidence interval. RESULTS: 150 patients (mean age 37.6 ± 10.9 years) with 166 fistulas, including 150 anal fistulas with scrotal extension. Most fistulas were low transsphincteric (80.0%, 120/150 patients). There was a strong agreement for primary tract classification and detecting the location of internal openings between MRI and surgical findings with k = 0.83 (0.780.87) and k = 0.89 (0.85 0.93) (p<0.001), respectively. There is a significant correlation between the location of internal openings and the type of fistula (p<0.05). Low transsphincteric fistulas were predominant in the anterior group (103/122 patients vs. 10/19 patients), while in the posterior group, it was more common in the high transsphincteric fistulas (7/19 patients vs. 14/122 patients), and the intersphincteric fistulas (1/19 patients vs. 5/122 patients); and the suprasphincteric fistulas were only seen in the posterior group (1 patient). CONCLUSION: Anal fistulas with scrotal extension are exceptions to Goodsalls rule. Albeit long-tract fistulas, most are low transsphincteric and have anterior internal openings. |
format | Online Article Text |
id | pubmed-10397721 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-103977212023-08-04 Preoperative magnetic resonance imaging of anal fistulas with scrotal extension: a retrospective study Vo, Duc Tan Nguyen, Truc Thi Thuy Nguyen, Nam Hoang Nguyen, Linh Thi Thuy Nguyen, Thien Thi Thanh Phan, Chien Cong Front Surg Surgery INTRODUCTION: This study aimed to elucidate the magnetic resonance (MR) characteristics of anal fistulas extending to the scrotum, and the applicable rules, and to correlate MR features with surgical findings. METHODS: We conducted a retrospective study in 150 consecutive patients with anal fistulas extending into the scrotum, who were diagnosed and underwent surgery at University Medical Center Ho Chi Minh City between January 2017 and April 2022. MR findings were evaluated and compared with surgical findings using Cohens kappa coefficient (k) with a 95% confidence interval. RESULTS: 150 patients (mean age 37.6 ± 10.9 years) with 166 fistulas, including 150 anal fistulas with scrotal extension. Most fistulas were low transsphincteric (80.0%, 120/150 patients). There was a strong agreement for primary tract classification and detecting the location of internal openings between MRI and surgical findings with k = 0.83 (0.780.87) and k = 0.89 (0.85 0.93) (p<0.001), respectively. There is a significant correlation between the location of internal openings and the type of fistula (p<0.05). Low transsphincteric fistulas were predominant in the anterior group (103/122 patients vs. 10/19 patients), while in the posterior group, it was more common in the high transsphincteric fistulas (7/19 patients vs. 14/122 patients), and the intersphincteric fistulas (1/19 patients vs. 5/122 patients); and the suprasphincteric fistulas were only seen in the posterior group (1 patient). CONCLUSION: Anal fistulas with scrotal extension are exceptions to Goodsalls rule. Albeit long-tract fistulas, most are low transsphincteric and have anterior internal openings. Frontiers Media S.A. 2023-07-20 /pmc/articles/PMC10397721/ /pubmed/37545842 http://dx.doi.org/10.3389/fsurg.2023.1224931 Text en © 2023 Vo, Nguyen, Nguyen, Nguyen, Nguyen and Phan. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) (https://creativecommons.org/licenses/by/4.0/) . The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Surgery Vo, Duc Tan Nguyen, Truc Thi Thuy Nguyen, Nam Hoang Nguyen, Linh Thi Thuy Nguyen, Thien Thi Thanh Phan, Chien Cong Preoperative magnetic resonance imaging of anal fistulas with scrotal extension: a retrospective study |
title | Preoperative magnetic resonance imaging of anal fistulas with scrotal extension: a retrospective study |
title_full | Preoperative magnetic resonance imaging of anal fistulas with scrotal extension: a retrospective study |
title_fullStr | Preoperative magnetic resonance imaging of anal fistulas with scrotal extension: a retrospective study |
title_full_unstemmed | Preoperative magnetic resonance imaging of anal fistulas with scrotal extension: a retrospective study |
title_short | Preoperative magnetic resonance imaging of anal fistulas with scrotal extension: a retrospective study |
title_sort | preoperative magnetic resonance imaging of anal fistulas with scrotal extension: a retrospective study |
topic | Surgery |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10397721/ https://www.ncbi.nlm.nih.gov/pubmed/37545842 http://dx.doi.org/10.3389/fsurg.2023.1224931 |
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