Acta Vet. Brno 2022, 91: 267-272

The effectiveness of intraoperative mesenteric portography for preventing misdiagnosis of congenital absence of the portal vein in dog with extrahepatic portosystemic shunt: a case report

Mu-Young Kim1, Ji-Hyun Kim1, Kyu-Chang Kim1, Hun-Young Yoon1,2

1Konkuk University, College of Veterinary Medicine, Department of Veterinary Surgery, Seoul, South Korea
2KU Center for Animal Blood Medical Science, Seoul, South Korea

Received August 23, 2021
Accepted June 14, 2022

A 5-month-old mixed-breed dog and a 10-month-old Welsh corgi dog were presented for evaluation with signs of congenital portosystemic shunt. In both dogs, computed tomography angiography revealed a single extrahepatic portosystemic shunt with the absence of the portal vein cranial to the shunt origin. Intraoperative mesenteric portography (IOMP) was performed after temporary complete occlusion of the shunt, revealing the portal branches faintly opacified with contrast medium. A cellophane band was applied around the shunt vessel without intraoperative attenuation. Postoperatively, both the dogs showed significant clinical improvement and the portal veins, not observed on preoperative ultrasonography, were visualized on postoperative ultrasonography. This study suggests the efficacy of IOMP, enabling the appropriate surgical procedure to be determined.


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