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Abstract

Background:

Acquired demyelinating syndromes (ADS) have the potential to negatively impact cerebellar growth, given the proclivity for infratentorial lesions in pediatric-onset multiple sclerosis (MS) and ADS.

Objective:

To investigate cerebellar growth longitudinally in pediatric ADS.

Methods:

Cerebellar volumes from 472 magnetic resonance imaging (MRI) scans of 98 patients with monophasic ADS (monoADS), monophasic acute disseminated encephalomyelitis (ADEM), and MS (49 girls; mean age: 11.4 years at first scan, mean follow-up: 3.1 years) imaged serially from onset and 897 MRI scans of 418 healthy children (223 girls, mean age: 11.3 years, mean follow-up: 2.9 years) were segmented automatically, analyzed with mixed-effect models, and compared with cerebral volume.

Results:

Cerebellar developmental trajectories followed a U-shaped curve, showing larger volumes in boys (p < 0.001). Cerebellar volumes in all three patient groups failed to reach age-expected trajectories, leading to significantly smaller volumes, notably in the posterior lobes. Cerebellar volume reductions were of a similar magnitude to cerebral volume reductions. Cerebellar white matter volume declined in MS and ADEM patients over time, while in monoADS patients it remained similar to controls. Cerebellar volumes did not correlate either with lesion volumes at onset or with physical disability.

Conclusion:

MonoADS, ADEM, and MS in childhood lead to impaired age-expected growth of the cerebellum.

Keywords

Cerebellum volumetric MRI multiple sclerosis acute disseminated encephalomyelitis pediatric

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Impaired growth of the cerebellum in pediatric-onset acquired CNS demyelinating disease

Abstract

Background:

Objective:

Methods:

Results:

Conclusion:

Keywords

Get full access to this article

References

Supplementary Material