What causes lacunar stroke

type.1 Lacunar infarcts are small infarcts (2–20 mm in diameter) in the deep cerebral white matter, basal gang-lia, or pons, presumed to result from the occlusion of a single small perforating artery supplying the subcortical areas of the brain.2 Although a recognised stroke subtype for over 50 years, the cause of lacunar ischaemic stroke,2 ... ................
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