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Differences in factors associated with silent and symptomatic MRI T2 hyperintensity lesions
T Fukui1, K Sugita, M Kawamura
1Department of Neurology, Showa University School of Medicine, Tokyo, Japan.
Abstract:
The factors and symptomatology associated with different types of hyperintensity lesions on MRI were investigated. The study population consisted of 139 subjects who were recruited from 450 outpatients who had a neurological diagnosis in 1994. The subjects underwent brain magnetic resonance imaging between 1994 and 1995 and were divided into three groups (control, asymptomatic, and symptomatic) on the basis of T2 hyperintensity lesions, as well as a history of or neurological signs of stroke, or both. The demographic characteristics and risk factors were studied, and the T2 hyperintensity lesions were analysed semi-quantitatively. Results showed that: (1) the control and asymptomatic groups did not differ in terms of risk factors and demographic characteristics with the exception of age; (2) the symptomatic group was characterized by a significantly higher incidence of hypertension and electrocardiographic abnormalities, as well as significantly more numerous risk factors when compared with the other two groups; (3) the symptomatic patients also had higher proportion of men and higher levels of systolic blood pressure and blood glucose than the control patients, and more frequent hypertriglyceridaemia and higher triglyceride level than the asymptomatic patients; (4) the symptomatic group had a greater lesion distribution in the posterior basal ganglia-internal capsule and the infratentorial regions than did the asymptomatic group. We concluded that the asymptomatic and symptomatic groups should not be considered identical entities.
Insights
Asymptomatic and symptomatic T2 hyperintensity lesions on MRI differ significantly. Symptomatic groups exhibit more risk factors like hypertension and distinct lesion locations, indicating they are not identical entities.
Area of Science:
- Neurology
- Radiology
- Neuroimaging
Background:
- Brain magnetic resonance imaging (MRI) is crucial for diagnosing neurological conditions.
- Hyperintensity lesions on MRI, particularly T2-weighted images, can indicate various pathologies.
- Differentiating between asymptomatic and symptomatic lesions is vital for accurate patient management.
Purpose of the Study:
- To investigate the factors and symptomatology associated with different types of T2 hyperintensity lesions on MRI.
- To compare demographic characteristics and risk factors between control, asymptomatic, and symptomatic groups.
- To analyze the semi-quantitative distribution of T2 hyperintensity lesions in relation to clinical presentation.
Main Methods:
- A cohort of 139 outpatients with neurological diagnoses underwent brain MRI.
- Subjects were categorized into control, asymptomatic, and symptomatic groups based on T2 hyperintensity lesions and stroke history/signs.
- Demographic data, risk factors, and lesion distribution were assessed semi-quantitatively.
Main Results:
- The symptomatic group showed a higher incidence of hypertension, electrocardiographic abnormalities, and more risk factors compared to control and asymptomatic groups.
- Symptomatic patients had a higher proportion of males, elevated systolic blood pressure, blood glucose, and triglyceride levels.
- Lesion distribution in the symptomatic group was more prevalent in the posterior basal ganglia-internal capsule and infratentorial regions.
Conclusions:
- Asymptomatic and symptomatic T2 hyperintensity lesion groups are distinct entities and should not be considered identical.
- Clinical factors such as hypertension and specific lesion locations are associated with symptomatic T2 hyperintensity lesions.
- Further research is warranted to elucidate the precise implications of these differing lesion types.