lacunar infarct


Any of multiple small cerebral infarcts in the corona radiata, internal capsule, striatum, thalamus, basis pontis, and/or cerebellum, occasionally preceded by transient symptoms, due to occlusion or stenosis of small penetrating branches of the middle and posterior cerebral and median branches of the basilar arteries; resolution of infarcts is characterised by residual 1–3-mm cavities or lacunae, characteristic of long-standing hypertension

lacunar infarct

Small vessel diseae Neurology Any of multiple small cerebral infarcts in the corona radiata, internal capsule, striatum, thalamus, basis pontis, cerebellum, occasionally preceded by transient Sx, due to occlusion or stenosis of small penetrating branches of the middle and posterior cerebral and median branches of the basilar arteries; resolution of infarcts is characterized by residual 1-3 mm cavities or lacunae, characteristic of long-standing HTN Clinical Pure motor hemiparesis, pure sensory stroke, ataxic hemiparesis, sensorimotor stroke. See Lacunar state, Multi-infarct dementia. Cf Hemorrhagic stroke.