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Scrutinizing brain magnetic resonance imaging patterns in Angelman syndrome
Marcio Leyser1, Marcia de Castro Diniz Gonsalvez, Pedro Erthal de Souza Vianna
1Department of Developmental Pediatrics, The SARAH Network of Rehabilitation Hospitals - SARAH International Center for Neurorehabilitation and Neuroscience, Brazil.
Neurology India
|March 9, 2016
Summary
Brain MRI is not a reliable diagnostic tool for Angelman syndrome (AS), a genetic disorder. Definitive diagnosis of AS relies on molecular biology testing, not neuroimaging findings.
Area of Science:
- Neurology
- Genetics
- Medical Imaging
Background:
- Angelman syndrome (AS) is characterized by global developmental delay, speech impairment, and severe epilepsy.
- Diagnostic challenges in AS necessitate exploring ancillary tools.
Purpose of the Study:
- To evaluate the diagnostic utility of brain magnetic resonance imaging (MRI) in Angelman syndrome.
- To determine if neuroimaging findings can support AS diagnosis.
Main Methods:
- Retrospective review of brain MRI scans from nine confirmed AS patients.
- Assessment of MRI images by two experienced neuroradiologists using a standardized protocol.
Main Results:
- Common findings included corpus callosum thinning (5/9), enlarged lateral ventricles (4/9), and cerebral atrophy (1/9).
- All patients exhibited increased signal intensity on T2-weighted and FLAIR sequences.
Conclusions:
- Brain MRI lacks specific findings for AS diagnosis in this case series.
- Molecular biology testing remains essential for definitive AS diagnosis, guided by clinical suspicion.
