Post ‐temporary ligation intraoperative mesenteric portovenography: comparison with CT angiography for investigation of portosystemic shunts

ObjectivesComparison of pre‐operative CT angiography and post‐temporary, full‐ligation, intraoperative, mesenteric portovenography for the characterisation of intrahepatic portal vasculature in patients with single extrahepatic portosystemic shunts. MethodsDescriptive analysis of previously collected images from 14 dogs and five cats. ResultsWith the exception of shunts involving the right gastric vein, intrahepatic arborisation appeared similar on both modalities. Portovenography improved contrast enhancement and slightly enlarged the intrahepatic portal vasculature. Clinical SignificanceCT angiography cannot replace intraoperative mesenteric portovenography after temporary full ligation, which provides information on intrahepatic portal vascularity. It is a practical and dynamic procedure, providing results that are instantaneously available at the time of surgery. In addition, intraoperative post‐temporary, full‐ligation, mesenteric portography confirmed that the single shunting vessel had both been recognised and ligated.
Source: The Journal of Small Animal Practice - Category: Veterinary Research Authors: Tags: PAPER Source Type: research