Changes in a cerebellar peduncle lesion in a patient with Dandy-Walker malformation: A diffusion tensor imaging study

Area of Science:

• Neuroscience
• Radiology
• Pediatrics

Background:

• Dandy-Walker malformation is a congenital brain abnormality often associated with motor deficits.
• Assessing the structural integrity of cerebellar peduncles is crucial for understanding motor function in pediatric neurological conditions.

Observation:

• A 20-month-old female with Dandy-Walker malformation presented with severe ataxia (Functional Ambulation Category 0, Berg Balance Scale 0).
• Initial diffusion tensor imaging (DTI) showed absent inferior cerebellar peduncles and reduced fractional anisotropy (FA) and increased apparent diffusion coefficient (ADC) in the superior and middle cerebellar peduncles compared to controls.

Findings:

• Over 10 months, the patient's functional ambulation improved to Category 2 and Berg Balance Scale to 7.
• Follow-up DTI revealed detectable inferior cerebellar peduncles and normalized FA in the superior cerebellar peduncle, suggesting structural recovery.
• These neuroimaging changes correlated with the patient's clinical functional improvement.

Implications:

• Diffusion tensor imaging of cerebellar peduncles can detect structural abnormalities and track recovery in Dandy-Walker malformation.
• This imaging technique may be valuable for evaluating cerebellar peduncle lesions and guiding therapeutic strategies in affected children.
• The findings highlight the potential for neuroplasticity and functional recovery in pediatric Dandy-Walker malformation with associated cerebellar peduncle involvement.