Clinical and imaging characteristics of Percheron artery infarction with unilateral embryonic posterior cerebral artery
10.3760/cma.j.issn.1006-7876.2012.01.008
- VernacularTitle:伴有一侧胚胎型大脑后动脉的Percheron动脉梗死二例临床与影像分析
- Author:
Jun NI
;
Lixin ZHOU
;
Qing LU
;
Ming YAO
;
Bin PENG
;
Jianming WANG
;
Liying CUI
- Publication Type:Journal Article
- Keywords:
Infarction, posterior cerebral artery;
Diffusion magnetic resonance imaging;
Congenital abnormalities
- From:
Chinese Journal of Neurology
2012;45(1):27-31
- CountryChina
- Language:Chinese
-
Abstract:
Objective Percheron artery is an uncommon anatomic variant. Percheron artery infarction with unilateral embryonic posterior cerebral artery ( PCA ) was rarely reported.The aim of this study was to characterize the clinical and imaging patterns of Percheron artery infarction with the unilateral embryonic PCA for early diagnosis and treatment.MethodsClinical and imaging data of 2 patients with Percheron artery infarction were reviewed retrospectively.ResultsTwo patients presented acute coma and one had paroxysmal blurred before coma.On neurological examinations,one patient had vertical gaze palsy besides two were unconsciousness. MRI showed symmetrical high signal intensity on diffusion weighed imaging (DWI)in bilateral paramedian thalami in two patients and a distinct pattern of V-shaped hyperintensity on DWI andFLAIR was present on the midbrain in one patient. Digital subtraction angiography and magnetic resonance angiography demonstrated unilateral embryonic PCA in two patients.ConclusionsThe classical clinical symptoms,symmetrical high signal in bilateral paramedian thalami and V-shaped sign in midbrain on DWI can improve recognition,evaluation and management of Percheron artery infarction.The unilateral embryonic PCA may be underlying risk factor of Percheron artery infarction.
