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Published in: Child's Nervous System 11/2018

Open Access 01-11-2018 | Original Paper

Post-operative paediatric cerebellar mutism syndrome: time to move beyond structural MRI

Authors: Sebastian M. Toescu, Samantha Hettige, Kim Phipps, RJ Paul Smith, Verity Haffenden, Chris Clark, Richard Hayward, Kshitij Mankad, Kristian Aquilina

Published in: Child's Nervous System | Issue 11/2018

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Abstract

Purpose

To determine the value of structural magnetic resonance imaging (MRI) in predicting post-operative paediatric cerebellar mutism syndrome (pCMS) in children undergoing surgical treatment for medulloblastoma.

Methods

Retrospective cohort study design. Electronic/paper case note review of all children with medulloblastoma presenting to Great Ormond Street Hospital between 2003 and 2013. The diagnosis of pCMS was established through a scoring system incorporating mutism, ataxia, behavioural disturbance and cranial nerve deficits. MRI scans performed at three time points were assessed by neuroradiologists blinded to the diagnosis of pCMS.

Results

Of 56 children included, 12 (21.4%) developed pCMS as judged by a core symptom of mutism. pCMS was more common in those aged 5 or younger. There was no statistically significant difference in pre-operative distortion or signal change of the dentate or red nuclei or superior cerebellar peduncles (SCPs) between those who did and did not develop pCMS. In both early (median 5 days) and late (median 31 months) post-operative scans, T2-weighted signal change in SCPs was more common in the pCMS group (p = 0.040 and 0.046 respectively). Late scans also showed statistically significant signal change in the dentate nuclei (p = 0.024).

Conclusions

The development of pCMS could not be linked to any observable changes on pre-operative structural MRI scans. Post-operative T2-weighted signal change in the SCPs and dentate nuclei underlines the role of cerebellar efferent injury in pCMS. Further research using advanced quantitative MRI sequences is warranted given the inability of conventional pre-surgical MRI to predict pCMS.
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Metadata
Title
Post-operative paediatric cerebellar mutism syndrome: time to move beyond structural MRI
Authors
Sebastian M. Toescu
Samantha Hettige
Kim Phipps
RJ Paul Smith
Verity Haffenden
Chris Clark
Richard Hayward
Kshitij Mankad
Kristian Aquilina
Publication date
01-11-2018
Publisher
Springer Berlin Heidelberg
Published in
Child's Nervous System / Issue 11/2018
Print ISSN: 0256-7040
Electronic ISSN: 1433-0350
DOI
https://doi.org/10.1007/s00381-018-3867-x

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