Magnetic resonance imaging appearance of intracranial hemorrhage secondary to cerebral vascular malformation in a dog.
A 14-year-old dog developed an acute onset of depression, disorientation, left hemiparesis,left hemianopia, left facial hypoesthesia, and a tendency to turn to the right. Based on these findings, a lesion affecting the right forebrain was suspected. Magnetic resonance imaging showed a mass within the right cerebral hemisphere resulting in compression of the right lateral ventricle and shifting the longitudinal fissure to the left. The lesion was hyperintense on T1-weighted images and hyperintense with focal regions of hypointensity on proton density-, and T2-weighted images, consistent with a subacute hemorrhage. At necropsy, there was a hematoma in the parietal portion of the right cerebral hemisphere. The hemorrhage was surrounded by numerous thin-walled veins, most likely a venous malformation. Magnetic resonance imaging of intracranial hemorrhage is reviewed.
Thomas
W B
WB
Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville 37901-1071, USA.
Adams
W H
WH
McGavin
M D
MD
Gompf
R E
RE
D000818:Animals; D001921:Brain / Q000473:pathology; D002543:Cerebral Hemorrhage / Q000209:etiology / Q000473:pathology / Q000662:veterinary*; D002550:Cerebral Veins / Q000002:abnormalities*; D002552:Cerebral Ventricles / Q000098:blood supply / Q000473:pathology; D004283:Dog Diseases / Q000209:etiology / Q000473:pathology*; D004285:Dogs; D006406:Hematoma / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D008279:Magnetic Resonance Imaging / Q000379:methods / Q000662:veterinary*