A 3‐year‐old crossbreed dog (case 1) and a 3‐month‐old German Shorthaired Pointer (case 2) were presented for acute signs of encephalopathy. A portosystemic shunt (PSS) was suspected based on clinical context and laboratory exam results and was confirmed on computed tomography (CT) angiography in both cases. A left‐sided azygos (case 1) and right‐sided azygos (case 2) continuation of an interrupted caudal vena cava (CVC) and a situs ambiguous (SA) were also observed and considered as incidental findings. Both dogs underwent PSS surgical correction. Postsurgical follow‐up imaging procedures suggested concomitant primary hypoplasia of the portal vein (PHPV) in both cases.
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Desbordes et al. (2024) studied this question.
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