Budd-Chiari-like syndrome associated with an adrenal phaeochromocytoma in a dog

A nine-year-old dog was presented with sudden-onset ascites and a history o f two previous syncopal episodes. Diagnostic tests pointed to a Budd-Chiari -like syndrome, with obstruction of the caudal vena cava between the liver and heart. The ascites was refractory to treatment and the dog was euthanas ed. On postmortem examination, a phaeochromocytoma of the left adrenal glan d was present, with contiguous invasions into the caudal vena cava, extendi ng cranially as far as the cavoatrial junction. To the authors' knowledge, this is the first reported case of a Budd-Chiari-like syndrome associated w ith a phaeochromocytoma in a dog.