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Published on: August 15, 2019
D-2-hydroxyglutaric aciduria with cerebral, vascular, and muscular abnormalities in a 14-year-old boy
O Eeg-Olofsson1, W W Zhang, Y Olsson
1Department of Women's and Children's Health, Uppsala University, Sweden. orvar.eeg-olofsson@pediatrik.uu.se
Insights
D-2-Hydroxyglutaric Aciduria, a rare metabolic disorder, can cause severe brain and organ damage. This case highlights a fatal presentation in a 14-year-old boy with epilepsy and vascular abnormalities.
Area of Science:
- Biochemistry
- Neurology
- Pediatrics
Background:
- D-2-Hydroxyglutaric Aciduria (2-HGA) is a rare metabolic disorder.
- It can lead to significant neurological and systemic complications.
Observation:
- A 14-year-old boy presented with early-onset irritability, pyloric stenosis, and epilepsy.
- Clinical features included mental retardation, hypotonia, dystonia, dysmorphic features, and cardiomegaly with aortic insufficiency.
- Brain MRI revealed cerebral atrophy, reduced white matter, and multiple middle cerebral artery aneurysms.
Findings:
- Autopsy confirmed white matter reduction and middle cerebral artery aneurysms.
- Microvascular lesions in the brain, kidneys, and lungs were observed.
- Cardiomyopathy, renal infarcts, and myopathy indicated a disseminated mesenchymal process.
Implications:
- This case underscores the severe systemic impact of D-2-Hydroxyglutaric Aciduria.
- The findings suggest a potential link between 2-HGA and widespread vascular and connective tissue abnormalities.
- Further research is needed to understand the pathogenesis and develop targeted therapies.
Abstract:
D-2-Hydroxyglutaric Aciduria is a rare metabolic disorder that can cause injury to the brain and other organs. This case report concerns a 14-year-old boy showing irritability and typical signs of pyloric stenosis early postnatally. From the age of 3 months he had epilepsy. He was mentally retarded, hypotonic with preserved reflexes, and dystonic. The features were dysmorphic with elongated head and high arched palate. Cardiomegaly with aortic insufficiency was diagnosed. Magnetic resonance imaging of the brain revealed atrophy, reduced periventricular white matter, and multiple bilateral aneurysms of the middle cerebral arteries. The boy died at the age of 14 years. Autopsy confirmed the white-matter reduction of the cerebral hemispheres as well as the arterial aneurysms of the middle cerebral arteries. Lesions of a few leptomeningeal and cerebral microvessels and of the renal and pulmonary arteries were also found. There were bilateral infarcts of the kidneys and signs of cardiomyopathy with noncompensated left ventricular failure. Signs of myopathy were evident. The clinical and postmortem findings imply a disseminated mesenchymal process.
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