Myelinopathia centralis diffusa (vanishing white matter disease) in a four-year-old boy

Area of Science:

• Pediatric Neurology
• Neuroimaging
• Metabolic Disorders

Background:

• Leukoencephalopathies are a group of rare genetic disorders affecting white matter in the brain.
• Childhood-onset leukoencephalopathies often present with progressive neurological deficits.
• Accurate diagnosis relies on a combination of clinical presentation, neuroimaging, and biochemical markers.

Observation:

• A four-year-old boy exhibited moderate ataxia following minor head trauma.
• Cranial MRI revealed severe cerebral white matter signal changes, isointense with cerebrospinal fluid (CSF) across all pulse sequences.
• Proton MR spectroscopy showed a generalized decrease in white matter metabolites.

Findings:

• Cerebrospinal fluid (CSF) analysis detected elevated glycine levels.
• The combination of clinical symptoms, MRI, MR spectroscopy, and elevated CSF glycine is characteristic of a specific leukoencephalopathy.
• This condition was initially termed myelinopathia centralis diffusa and is now known as vanishing white matter disease.

Implications:

• Recognition of this distinct pattern aids in the early diagnosis of vanishing white matter disease.
• Understanding the characteristic neuroimaging and biochemical profile is crucial for differentiating it from other childhood white matter disorders.
• Further research into the pathophysiology and potential treatments for this myelin disorder is warranted.