Lacunar infarct diameter

The symptoms of lacunar infarcts are cystic lesions ranging from 0.2 to 15 mm in diameter. Lacunar infarcts are small perforating arteries deep in the cerebral hemisphere or brain stem that develop lesions in the walls of the vessels that occlude the lumen on the basis of prolonged hypertension. The incidence of lacunar infarcts is statistically high, accounting for 20% to 30% of cerebral infarcts. The most common sites of disease are the internal capsule, thalamus, and pons. A few are located in the corona radiata and the subependymal region of the ventricle. Arteries in these locations are mostly small arteries called deep perforators. Due to the limited blood supply range of deep perforators, the occlusion value of a single branch will cause ischemic necrosis of cerebellar tissue, forming this so-called lacuna.