EUS and MRI in the diagnosis of Crohn's perianal fistulas
| EUS | MRI | |
|---|---|---|
| Simple fistulas | +++ | +++ |
| Complex fistulas | ++ | +++ |
| High tracts | ++ | +++ |
| Abscess | ++ | +++ |
| Internal openings | +++ | ++* |
| Availability | −/+++ | +/++ |
| Costs | +++ | +/++ |
| Overall accuracy | 62.5–95% | 76–100% |
Modified from Gecse et al.108
*Sensitivity of MRI to detect internal openings can be enhanced by the use of endoanal coils. However, their use is not widely available.
EUS, endoanal ultrasound.