Post-traumatic striatocapsular infarction (SCI) due to lenticulostriate artery (LSA) damage is rare. Most cases reported are in children. We discuss the pathogenesis and differential diagnosis of this kind of SCI after trauma in adult patients. The most common etiology of non-traumatic SCI are an embolism from the proximal artery, cardiogenic embolism, and atherosclerotic plaque in the proximal middle cerebral artery (MCA). However, injury of the LSA after trauma may lead to hemorrhagic infarction in the basal ganglia (BG). Post-traumatic SCI due to LSA damage might be associated with hemorrhage in the BG. The main locations of these lesions are the distal perfusion area of the LSA, similar to SCI due to intracranial atherosclerotic disease affecting the MCA. Vessel wall imaging, magnetic resonance angiography, and ultrahigh-resolution computed tomography can be used for differentiating the injury mechanism in SCI following a traumatic event.
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