ULTRASONOGRAPHIC FEATURES OF EXTRAHEPATIC BILIARY OBSTRUCTION IN 30 CATS
Article first published online: 23 AUG 2007
Veterinary Radiology & Ultrasound
Volume 48, Issue 5, pages 439–447, September–October 2007
How to Cite
GAILLOT, H. A., PENNINCK, D. G., WEBSTER, C. R. L. and CRAWFORD, S. (2007), ULTRASONOGRAPHIC FEATURES OF EXTRAHEPATIC BILIARY OBSTRUCTION IN 30 CATS. Veterinary Radiology & Ultrasound, 48: 439–447. doi: 10.1111/j.1740-8261.2007.00275.x
- Issue published online: 23 AUG 2007
- Article first published online: 23 AUG 2007
- Received October 31, 2007; accepted for publication March 22, 2007.
- biliary obstruction;
The goals of our study were to review the ultrasonographic features of spontaneous extrahepatic biliary obstruction in cats and to determine whether these features can assist in differentiating tumor, inflammation, and choleliths as the cause of obstruction. Thirty cats with a presurgical ultrasound examination and confirmed extrahepatic biliary obstruction were studied. A common bile duct diameter over 5 mm was present in 97% of the cats with extrahepatic biliary obstruction. Gallbladder dilation was seen in <50% of the cats. Ultrasound identified all obstructive choleliths (calculus or plugs) in the common bile duct. However, neither common bile duct diameter nor appearance or any other ultrasonographic feature allowed differentiation between tumor and inflammation as the cause of obstruction. A short duration of clinical signs (10 days or less) seemed to be associated with obstructive cholelithiasis.