Anal fistula x ray
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- Fistulography is used to diagnose anal fistula in the past.
- Fistulography is painful and invasive procedure so it is replaced by MRI nowadays.
- This is used to find out the anatomy of fistulas.
- A fine cannula is catheterized through the external opening, a water-soluble contrast agent is injected to find out the fistulous track and after that X-ray is taken.
- It is very difficult to assess fistula with multiple tracks due to the filling defect with contrast material.
- Fistulography is not used to visualize the anal sphincter.
- [+++https://radiopaedia.org/articles/perianal-fistula "Perianal fistula | Radiology Reference Article | Radiopaedia.org"] Check
- Halligan S, Stoker J (2006). "Imaging of fistula in ano". Radiology. 239 (1): 18–33. doi:10.1148/radiol.2391041043. PMID 16567481.
- "https://radiopaedia.org/cases/46767">rID: 46767