Infantile metachromatic leukodystrophy in an 18 month old girl

Muhammad Saad Ali Mallick1, Ansab Godil1, Akash Khetpal1

  • 1Medical Students, Dow University of Health Sciences, Pakistan.

Insights

Metachromatic leukodystrophy (MLD) is a rare neurodegenerative disorder. This case report highlights key clinical and MRI findings for diagnosing MLD, especially when enzyme or genetic tests are unavailable.

Area of Science:

  • Neurology
  • Metabolic Disorders
  • Pediatrics

Background:

  • Metachromatic leukodystrophy (MLD) is a rare, inherited neurodegenerative disorder affecting myelin.
  • It is characterized by the buildup of sulfatides, leading to progressive neurological damage.
  • The incidence of MLD is estimated between 1 in 1,000,000 live births.

Observation:

  • A challenging case of MLD in an 18-month-old child presented with motor regression and developmental delay.
  • Brain MRI revealed characteristic cortical demyelination with a distinctive tigroid appearance.
  • Diagnosis was established based on clinical and imaging findings in the absence of enzyme assays or genetic analysis.

Findings:

  • The case underscores the diagnostic utility of clinical presentation and specific MRI findings in MLD.
  • Cortical demyelination and tigroid patterns on MRI are crucial indicators for MLD diagnosis.
  • Early identification through these methods can guide management, even without definitive biochemical or genetic confirmation.

Implications:

  • This report emphasizes the importance of recognizing clinical and radiological signs for early MLD diagnosis.
  • It highlights diagnostic strategies for MLD in resource-limited settings or when advanced testing is delayed.
  • Prompt diagnosis facilitates timely supportive care, such as physiotherapy for musculoskeletal symptoms, improving patient management.