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Head CT showing periventricular white matter lesions. Leukoaraiosis is a particular abnormal change in appearance of white matter near the lateral ventricles. It is often seen in aged individuals, but sometimes in young adults. [1] [2] On MRI, leukoaraiosis changes appear as white matter hyperintensities (WMHs) in T2 FLAIR images.
Deep white matter hyperintensities occur deep within white matter, periventricular white matter hyperintensities occur adjacent to the lateral ventricles and subcortical hyperintensities occur in the basal ganglia. [citation needed] Hyperintensities are often seen in auto immune diseases that have effects on the brain. [6]
FLAIR hyperintensity confined to sulcus and/or cortex/subcortical white matter in one location < 5 cm FLAIR hyperintensity 5 to 10 cm, or more than 1 site of involvement, each measuring < 10 cm FLAIR hyperintensity measuring > 10 cm, often with significant subcortical white matter and/or sulcal involvement.
“White matter hyperintensities specifically refer to lesions found in the white matter tracts of the brain, i.e., the cables connecting neurons, and are an imaging biomarker for diseases ...
[4] [5] If lumbar puncture is performed this may show increased protein levels but no white blood cells. [1] [3] [4] Computed tomography scanning may be performed in the first instance; this may show low density white matter areas in the posterior lobes. [4] The diagnosis is typically made with magnetic resonance imaging of the brain.
Increased levels of CRP as measured by a CRP test or the more sensitive high serum CRP (hsCRP) test have a close correlation to increased risk of silent stroke. Interleukin-6 is an interleukin (type of protein) produced by T-cells (specialized white blood cells), macrophages and endothelial cells.
Symptoms include sudden increase in blood pressure, acute confusional state, headaches, vomiting, and seizure. Retinal hemorrhages and hard exudates may be present on funduscopic exam. Hypertensive leukoencephalopathy may have concurrent cardiac ischemia and hematuria.
White matter is the tissue through which messages pass between different areas of grey matter within the central nervous system. The white matter is white because of the fatty substance (myelin) that surrounds the nerve fibers (axons). This myelin is found in almost all long nerve fibers, and acts as an electrical insulation.
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