Related Experiment Video
Updated: Jun 14, 2026

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
Published on: April 17, 2019
MRI in perianal fistulae
Pushpinder S Khera1, Hesham A Badawi, Ahmed H Afifi
1Department of Clinical Radiology, Al Sabah Hospital, Kuwait City, Kuwait, Medical Research Institute, Alexandria University, Egypt.
Magnetic resonance imaging (MRI) is the preferred method for diagnosing perianal fistulae. This study reviews MRI findings and sphincter anatomy for accurate fistula classification.
Area of Science:
- Radiology
- Gastroenterology
- Surgical Anatomy
Background:
- Perianal fistulae are complex conditions requiring precise imaging for effective management.
- Accurate assessment of anal sphincter anatomy is crucial for surgical planning and outcomes.
- Magnetic resonance imaging (MRI) offers superior soft-tissue contrast and multiplanar capabilities for evaluating perianal disease.
Purpose of the Study:
- To outline the classification of perianal fistulae.
- To present a pictorial review of sphincter anatomy.
- To illustrate the magnetic resonance imaging (MRI) findings in perianal fistulae.
Main Methods:
- Retrospective analysis of 43 patients with a clinical diagnosis of perianal fistula.
- Detailed review of magnetic resonance imaging (MRI) scans.
- Correlation of MRI findings with surgical anatomy and fistula classification.
Main Results:
- Magnetic resonance imaging (MRI) successfully identified 44 fistulae in 35 patients.
- Eight patients were diagnosed with perianal sinuses only.
- MRI provided clear visualization of sphincter anatomy and fistula tracts.
Conclusions:
- Magnetic resonance imaging (MRI) is the imaging modality of choice for evaluating perianal fistulae.
- Understanding sphincter anatomy on MRI is essential for accurate fistula characterization.
- This pictorial essay aids in the interpretation of MRI in perianal fistula assessment.
More Related Videos
Related Concept Videos
Magnetic Resonance Imaging
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Imaging Studies IV: Magnetic Resonance Imaging
Imaging Studies for Cardiovascular System IV: CMRI

