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Glutaric aciduria type I: a neuroimaging diagnosis?
Cesar C Santos1, E Steve Roach
1Department of Neurology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA. csantos@wfubmc.edu
Journal of Child Neurology
|September 15, 2005
Summary
Glutaric aciduria type I, a metabolic disorder, can cause acute dystonia. Diffusion-weighted MRI is a sensitive tool for detecting basal ganglia necrosis in affected children.
Area of Science:
- Neurology
- Metabolic Disorders
- Pediatric Neurology
Background:
- Glutaric aciduria type I (GA-I) is an inherited metabolic disorder.
- It results from a deficiency in glutaryl-coenzyme A dehydrogenase.
- GA-I affects organic acid metabolism.
Observation:
- A previously healthy 17-month-old girl presented with acute dystonia.
- Brain MRI revealed hyperintensities in the caudates and putamina.
- Diffusion-weighted imaging showed restricted diffusion, indicating necrosis.
Findings:
- Diffusion-weighted MRI is highly sensitive for detecting basal ganglia necrosis in GA-I.
- Conventional MRI showed characteristic brain abnormalities.
- Elevated 3-hydroxyglutaric and glutaric acids confirmed the diagnosis.
Implications:
- Early detection of basal ganglia necrosis via MRI is crucial for managing GA-I.
- This highlights the utility of advanced imaging techniques in diagnosing rare metabolic disorders.
- Understanding imaging findings aids in prompt diagnosis and intervention for GA-I.