Page 2241 - Cote clinical veterinary advisor dogs and cats 4th

Fistulogram 1114.e3

• Masking of small foreign bodies by opacity • CT scan and MRI Reproduced from the third edition in
of contrast agent (common) ○ Expensive unabridged form.
VetBooks.ir Procedure Pearls AUTHOR: Brett Kantrowitz, DVM, DACVR
○ Variable information obtained
EDITORS: Leah A. Cohn, DVM, PhD, DACVIM; Mark S.
• Catheter is placed retrograde into draining
Thompson, DVM, DABVP
tract as far as possible.
• Injection (usually 1-12 mL) while catheter Fistulography is a low-sensitivity, high-speci-
ficity test. Many lesions may not be revealed
in place or while drawing it back out adequately with this form of testing, but it can
• Appropriate radiographic projections; two be clinically useful.
views at right angles are usually sufficient.
SUGGESTED READING
Postprocedure Armbrust LJ, et al: Ultrasonographic diagnosis of
Address issues identified during fistulogram as foreign bodies associated with chronic draining
appropriate. tracts and abscesses in dogs. Vet Radiol Ultrasound
44:66-70, 2003.
Alternatives and Their Relative Procedures and Techniques
Merits
• Ultrasound
○ Easy to perform
○ Variable information obtained; may detect
foreign bodies
○ Difficult to follow extent of tract

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