Magnetic resonance imaging findings of hepatic encephalopathy in a dog with a portosystemic shunt.
A 6-year-old ShihTzu presented with tonic-clonic cluster seizure. T2-weighted magnetic resonance (MR) images showed bilateral diffuse hyperintense lesions at the cerebral cortex with enlarged sulci. Computed tomography revealed a portosystemic shunt (PSS) and azygos continuation. Based on the clinical signs, blood examinations and diagnostic images, the dog was diagnosed with hepatic encephalopathy secondary to PSS. The neurologic signs were gradually improved after medical therapy for hyperammonemia. This is the first report of hyperintensity of the cerebral cortex on T2-weighted MR images associated with acute hepatic encephalopathy in a dog.
BK21 Basic & Diagnostic Veterinary Specialist Program for Animal Diseases and Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, South Korea.
So-Jeung
SJ
Moon
Ju-Won
JW
Kim
Byeong-Teck
BT
Kang
Chae-Young
CY
Lim
Hee-Myung
HM
Park
D000818:Animals; D001921:Brain / Q000473:pathology; D004283:Dog Diseases / Q000473:pathology*; D004285:Dogs; D005260:Female; D006501:Hepatic Encephalopathy / Q000000981:diagnostic imaging / Q000473:pathology / Q000662:veterinary*; D008107:Liver Diseases / Q000150:complications / Q000662:veterinary*; D008279:Magnetic Resonance Imaging / Q000662:veterinary*; D011168:Portal System / Q000473:pathology*; D011859:Radiography; D012640:Seizures / Q000209:etiology / Q000662:veterinary