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腔隙（Lacunae）是指脑梗塞后，经巨噬细胞移去梗塞组织后遗留下的不规则形小腔，几乎都位于脑的深部，尤其是基底节，内囊，视丘，脑干和小脑白质中，从不见于大脑皮层和脊髓。腔隙多发生于高血压病人，很小的腔隙可不引起症状，仅在病人作脑部病理检查时才被发现，但位于神经功能重要部位的较大的腔隙可产生各种不同的临床综合征。脑腔隙的发病率的趋势：Fisher 1950～1954年对1042例显示腔隙的114个脑的病理研究及1975～1976年对200个脑作回顾性对比检查研究，从神经病理观察发现经抗高血压治疗数年的病人发生新腔隙是罕见的，说明抗高血压治疗是有效的。
Lacunae refers to the irregular small cavities left by infarcted macrophages after removing infarct tissue, almost all located in the deep brain, especially the basal ganglia, internal capsule, hypothalamus, brain stem and White matter in the cerebellum, never seen in the cerebral cortex and spinal cord. Laps occur in patients with hypertension, small lacunar no symptoms, only when the patient was brain pathological examination was found, but located in important parts of the nerve function of the larger lacuna can produce a variety of clinical Syndrome. The trend of the incidence of cerebral lacunar: Fisher 1950 ~ 1954 to 1042 cases of lacunar 114 brain pathological studies and 1975 to 1976 retrospective study of 200 brains from neuropathological observation found that by anti-anti Hypertension is a rare occurrence of new lacunas in patients treated for years, suggesting that antihypertensive therapy is effective.