Original Research

Contrast-enhanced computed tomography angiography and volume-rendered imaging for evaluation of cellophane banding in a dog with extrahepatic portosystemic shunt

H. Yoon, Y. Choi, H. Han, S. Kim, K. Kim, S. Jeong
Journal of the South African Veterinary Association | Vol 82, No 2 | a46 | DOI: https://doi.org/10.4102/jsava.v82i2.46 | © 2011 H. Yoon, Y. Choi, H. Han, S. Kim, K. Kim, S. Jeong | This work is licensed under CC Attribution 4.0
Submitted: 11 April 2011 | Published: 11 April 2011

About the author(s)

H. Yoon, Department of Veterinary Surgery, College of Veterinary Medicine, and the Veterinary Science Research Institute, Konkuk University, Seoul 143-701, Korea., Korea, Democratic People's Republic of
Y. Choi, VIP Animal Hospital, Seoul 130-840, Korea., Korea, Democratic People's Republic of
H. Han, Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 151-747, Korea., Korea, Democratic People's Republic of
S. Kim, VIP Animal Hospital, Seoul 130-840, Korea., Korea, Democratic People's Republic of
K. Kim, dDepartment of Veterinary Surgery, College of Veterinary Medicine, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea., Korea, Democratic People's Republic of
S. Jeong, dDepartment of Veterinary Surgery, College of Veterinary Medicine, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea., Korea, Democratic People's Republic of

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Abstract

A 4-year-old, 1.8 kg, male, castrated Maltese was presented for evaluation of urolithiasis. Urinary calculi were composed of ammonium biurate. Preprandial and postprandial bile acids were 44.2 and 187.3 μmol/ , respectively (reference ranges 0–10 and 0–20 μmol/ , respectively). Single-phase contrast-enhanced computed tomography angiography (CTA) with volume-rendered imaging (VRI) was obtained. VRI revealed a portocaval shunt originating just cranial to a tributary of the gastroduodenal vein and draining into the caudal vena cava at the level of the epiploic foramen. CTA revealed a 3.66 mm-diameter shunt measured at the level of the termination of the shunt and a 3.79 mm-diameter portal vein measured at the level between the origin of the shunt and the porta of the liver. Surgery was performed using cellophane banding without attenuation. Follow-up single-phase CTA with VRI was obtained 10 weeks after surgery. VRI revealed no evidence of portosystemic communication on the level of a cellophane band and caudal to the cellophane band. CTA demonstrated an increased portal vein diameter (3.79–5.27 mm) measured at the level between the origin of the shunt and the porta of the liver. Preprandial and postprandial bile acids were 25 and 12.5 μmol/ , respectively (aforementioned respective reference ranges), 3 months post-surgery. No problems were evident at 6 months.

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