Suspected microscopic hepatic arteriovenous fistulae in a young dog.
Portal hypertension can develop from any disorder that obstructs portal blood flow and may cause ascites in young dogs. Anomalous hepatic arteriovenous (AV) connections are rare but should be suspected in any young dog with portal hypertension or ascites. All previous reports of dogs with hepatic AV fistulae have documented macroscopic connections between the arterial and venous systems. Identical clinical signs and histopathologic findings can develop in dogs in which a macroscopic hepatic AV connection cannot be detected. Microscopic AV connections may be responsible for clinical signs in these dogs.
Schermerhorn
T
T
Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6401, USA.
Center
S A
SA
Dykes
N L
NL
Yeager
A E
AE
Rowland
P H
PH
D000818:Animals; D001164:Arteriovenous Fistula / Q000150:complications / Q000000981:diagnostic imaging / Q000662:veterinary*; D001165:Arteriovenous Malformations / Q000150:complications / Q000473:pathology / Q000662:veterinary; D001201:Ascites / Q000209:etiology / Q000662:veterinary; D004283:Dog Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D004285:Dogs; D005260:Female; D006499:Hepatic Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging; D006975:Hypertension, Portal / Q000150:complications / Q000209:etiology / Q000662:veterinary; D008099:Liver / Q000002:abnormalities / Q000098:blood supply* / Q000473:pathology; D008833:Microcirculation / Q000002:abnormalities; D011169:Portal Vein / Q000002:abnormalities*; D011859:Radiography