作者报告3例丘脑外侧梗塞,描述了丘脑外侧梗塞的两种不同的血管损害。1例病人大脑后动脉(PCA)近端至丘脑膝状体动脉分支处闭塞造成大面积的丘脑外侧梗塞,尔后并发了大脑脚及枕叶的进展性缺血症状。另外两例病人都患高血压和糖尿病,均表现为较局限的丘脑外侧梗塞,且动脉造影PCA正常。例1临床表现为半身感觉缺失进而发展为偏盲,轻偏瘫。头颅CT示右侧,丘脑外侧部位有低密度灶;动脉造影显示右PCA在中脑周围部分闭塞,左侧椎动脉远端及基底动脉近乎完全狭窄:尸解见右侧PCA The authors report three cases of lateral thalamic infarction, depicting two different vascular lesions of the lateral thalamic infarction. The occlusion of the proximal part of the posterior cerebral artery (PCA) to the branch of the thalamic geniculate motor artery in one patient resulted in a massive infarction of the lateral thalamic brain, followed by progressive ischemia of the cerebral peduncle and occipital lobe. The other two patients had high blood pressure and diabetes, showed more restrictive lateral thalamic infarction, and angiography PCA normal. Case 1 clinical manifestations of partial loss of the body and then developed partial hemianopia, hemiparesis. Cranial CT showed the right side of the hypothalamus lateral lobe lesions; angiography showed right PCA partially occluded around the midbrain, left distal vertebral artery and basilar artery almost completely stenosis: autopsy see the right PCA