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Endoanal ultrasound or magnetic resonance imaging for preoperative assessment of anal fistula: a comparative study
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Radiology, Oncology and Radiation Science, Radiology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Radiology, Oncology and Radiation Science, Radiology.
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2001 (English)In: Colorectal Disease, ISSN 1462-8910, E-ISSN 1463-1318, Vol. 3, no 3, 189-197 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE:

To compare endoanal ultrasound (EUS) with a 10-MHz probe vs. bodycoil magnetic resonance imaging (MRI) in the preoperative evaluation of anal fistula.

SUBJECTS AND METHODS:

23 patients with fistula in the anal region underwent preoperative 0.5 T bodycoil MRI and 10 MHz EUS which included probing in 6 patients. The results of the EUS and MRI were compared against the surgical findings as a reference method.

RESULTS:

In classification of the primary tract there was agreement between EUS and surgical findings in 14 (61%) and between MRI and surgery in 11 (48%). Concerning the presence of an internal opening the corresponding figures were 17 (74%) and 10 (43%) and in judging the presence of an extension or an abscess 15 (65%) vs. 11 (48%), respectively. In three out of eight patients with nonhealing or recurrence after surgery preoperative imaging had shown an extension and/or an abscess that was not identified by the surgeon.

CONCLUSION:

EUS, sometimes complemented with probing, is well comparable to bodycoil MRI in classifying and describing the topography of an anal fistula.

Place, publisher, year, edition, pages
2001. Vol. 3, no 3, 189-197 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-153008DOI: 10.1046/j.1463-1318.2001.00241.xPubMedID: 12790988OAI: oai:DiVA.org:uu-153008DiVA: diva2:414858
Available from: 2011-05-04 Created: 2011-05-04 Last updated: 2017-12-11Bibliographically approved

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