Hepatic arteriovenous fistulae and portal vein hypoplasia in a Labrador retriever.
An 18-month-old male Labrador retriever was referred for investigation of chronic intermittent diarrhoea and vomiting of two months duration. A diagnosis of hepatic arteriovenous fistulae was made. These are extremely rare hepatic vascular anomalies which confer arterial pressure to the portal vein. Liver atrophy, portal vein hypoplasia, portal hypertension and multiple acquired portosystemic collateral vessels are the main complications. Surgical excision is a challenge as resection of large lesions may be associated with significant blood loss. In this dog, persistence of portal vein hypoplasia and extensive collateral pathways following surgery led to a reserved prognosis.
Schaeffer
I G
IG
Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, The Netherlands.
Kirpensteijn
J
J
Wolvekamp
W T
WT
Van den Ingh
T S
TS
Rothuizen
J
J
D000792:Angiography / Q000662:veterinary; D000818:Animals; D001164:Arteriovenous Fistula / Q000151:congenital / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000151:congenital / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D004285:Dogs; D006499:Hepatic Artery / Q000002:abnormalities*; D008107:Liver Diseases / Q000151:congenital / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D008297:Male; D011169:Portal Vein / Q000002:abnormalities*; D014463:Ultrasonography