alexa MRI of Crohn's Anoperineal Disease
ISSN: 2161-069X

Journal of Gastrointestinal & Digestive System
Open Access

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Review Article

MRI of Crohn's Anoperineal Disease

Shaunagh McDermott*, Anuradha S Shenoy-Bhangle and Michael S Gee
Massachusetts General Hospital, Division of Abdominal Imaging and Interventional Radiology, 55 Fruit Street, Boston, MA 02114, USA
Corresponding Author : Shaunagh McDermott
Massachusetts General Hospital
Division of Abdominal Imaging and Interventional Radiology
55 Fruit Street, Boston, MA 02114, USA
Tel: (857) 205-8501
Fax: (617) 726-4891
E-mail: [email protected]
Received February 01, 2012; Accepted April 02, 2012; Published April 04, 2012
Citation: McDermott S, Shenoy-Bhangle AS, Gee MS (2012) MRI of Crohn’s Anoperineal Disease. J Gastroint Dig Syst S9:001. doi: 10.4172/2161-069X.S9-001
Copyright: © 2012 McDermott S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Anoperineal involvement is seen in up to 38% of patients with Crohn’s disease. To adopt the best treatment strategy and avoid recurrences, it is important to obtain precise radiological information of the fistulous track. Magnetic resonance imaging provides precise information on the anatomy of the anal canal, the anal sphincteric complex, and the relationship of the fistula to the pelvic floor structures. In this article we review the anatomy of the anal canal, the pathogenesis of perianal fistula, different MRI sequences for the evaluation of fistula with emphasis on their imaging findings and an MR imaging based grading system for their classification.

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