[Lacunar stroke and subcortical arteriosclerotic encephalopathy]

Area of Science:

• Neurology
• Neuroimaging
• Vascular Neurology

Background:

• Lacunar stroke (LS) is a common type of ischemic stroke.
• Subcortical arteriosclerotic encephalopathy (SAE) is a progressive cerebrovascular disease.
• Understanding differences in LS presentation is crucial for prognosis.

Purpose of the Study:

• To compare clinical and neurovisual characteristics of patients after their first lacunar stroke.
• To identify features that differentiate LS as an isolated event versus an early sign of SAE.
• To explore the potential of these differences for predicting LS outcomes.

Main Methods:

• Comparative analysis of two patient groups: isolated LS survivors and LS as debut of SAE.
• Clinical assessment including neurological deficits (e.g., motor hemiparesis).
• Neuroimaging (MRI/CT) to evaluate lacunar lesion characteristics (size, shape) and presence of white matter changes (leucoareosis).

Main Results:

• Group 1 (isolated LS) predominantly presented with classical lacunar syndromes (94% motor hemiparesis) and larger, round/oval lesions.
• Group 2 (LS as SAE debut) showed less frequent classical syndromes (42%), smaller, irregular lesions, and higher rates of concomitant leucoareosis (77%) and lacunes (62%).
• Significant differences were observed in lesion characteristics and associated white matter changes between the groups.

Conclusions:

• Clinical and neuroimaging findings differ significantly between isolated lacunar strokes and those preceding subcortical arteriosclerotic encephalopathy.
• These distinctions may reflect variations in the size and nature of affected intracerebral arteries and hemodynamic factors.
• Observed differences can potentially inform the prognosis of lacunar stroke.