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MRI in nonketotic hyperglycinaemia: case report
M Bekiesiñiska-Figatowska1, D Rokicki, J Walecki
1Department of Diagnostic Imaging, Central Railway Hospital, Warsaw, Poland. mfigatowska@mp.pl
Neuroradiology
|October 12, 2001
Summary
Nonketotic hyperglycinaemia is a rare metabolic disorder. This case highlights brain atrophy, corpus callosum thinning, and delayed myelination in a young patient, underscoring the neurological impact of this condition.
Area of Science:
- Neurology
- Metabolic Disorders
- Neuroimaging
Background:
- Nonketotic hyperglycinaemia (NKH) is an inborn error of metabolism.
- It results from defects in the glycine cleavage system, leading to glycine accumulation.
- NKH presents with severe neurological symptoms, including seizures and developmental delay.
Observation:
- A pediatric case of genetically confirmed nonketotic hyperglycinaemia is presented.
- The patient exhibited characteristic neurological manifestations associated with NKH.
Findings:
- Magnetic Resonance Imaging (MRI) revealed significant brain atrophy.
- Specific findings included thinning of the corpus callosum.
- Delayed myelination was observed in the cerebral hemispheres, predominantly in the parietal lobes.
Implications:
- This case underscores the critical role of neuroimaging in diagnosing and understanding the pathophysiology of NKH.
- The observed MRI findings provide insights into the structural brain abnormalities caused by glycine encephalopathy.
- Early diagnosis and intervention are crucial for managing neurological complications in nonketotic hyperglycinaemia.