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A Case of Action-Induced Clonus that Mimicked Action Tremors and was Associated with Cervical Schwannoma

Clonus is the rhythmic muscle contraction which usually occurs in patients with lesions involving descending motor pathways. Sometimes, rhythmic oscillation of action induced clonus could be confused to action tremor. We report a case of action induced clonus associated with cervical schwannoma whic...

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Autores principales: Sung, Young-Hee, Park, Ki-Hyung, Lee, Yeung-Bae, Park, Hyeon-Mi, Shin, Dong-Jin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Movement Disorder Society 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4027665/
https://www.ncbi.nlm.nih.gov/pubmed/24868382
http://dx.doi.org/10.14802/jmd.10013
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author Sung, Young-Hee
Park, Ki-Hyung
Lee, Yeung-Bae
Park, Hyeon-Mi
Shin, Dong-Jin
author_facet Sung, Young-Hee
Park, Ki-Hyung
Lee, Yeung-Bae
Park, Hyeon-Mi
Shin, Dong-Jin
author_sort Sung, Young-Hee
collection PubMed
description Clonus is the rhythmic muscle contraction which usually occurs in patients with lesions involving descending motor pathways. Sometimes, rhythmic oscillation of action induced clonus could be confused to action tremor. We report a case of action induced clonus associated with cervical schwannoma which was misdiagnosed as essential tremor. The patient had spasticity in all limbs with exaggerated tendon reflexes, and passive stretch-induced clonus. Imaging and histological examinations revealed a schwannoma extending from C2 to C7. The lesion was partially removed by surgery. Even though essential tremor is a common disease, clinician have to do sufficient neurologic examination considering differential diagnosis.
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spelling pubmed-40276652014-05-27 A Case of Action-Induced Clonus that Mimicked Action Tremors and was Associated with Cervical Schwannoma Sung, Young-Hee Park, Ki-Hyung Lee, Yeung-Bae Park, Hyeon-Mi Shin, Dong-Jin J Mov Disord Case Report Clonus is the rhythmic muscle contraction which usually occurs in patients with lesions involving descending motor pathways. Sometimes, rhythmic oscillation of action induced clonus could be confused to action tremor. We report a case of action induced clonus associated with cervical schwannoma which was misdiagnosed as essential tremor. The patient had spasticity in all limbs with exaggerated tendon reflexes, and passive stretch-induced clonus. Imaging and histological examinations revealed a schwannoma extending from C2 to C7. The lesion was partially removed by surgery. Even though essential tremor is a common disease, clinician have to do sufficient neurologic examination considering differential diagnosis. The Korean Movement Disorder Society 2010-10 2010-10-30 /pmc/articles/PMC4027665/ /pubmed/24868382 http://dx.doi.org/10.14802/jmd.10013 Text en Copyright © 2010 The Korean Movement Disorder Society This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Case Report
Sung, Young-Hee
Park, Ki-Hyung
Lee, Yeung-Bae
Park, Hyeon-Mi
Shin, Dong-Jin
A Case of Action-Induced Clonus that Mimicked Action Tremors and was Associated with Cervical Schwannoma
title A Case of Action-Induced Clonus that Mimicked Action Tremors and was Associated with Cervical Schwannoma
title_full A Case of Action-Induced Clonus that Mimicked Action Tremors and was Associated with Cervical Schwannoma
title_fullStr A Case of Action-Induced Clonus that Mimicked Action Tremors and was Associated with Cervical Schwannoma
title_full_unstemmed A Case of Action-Induced Clonus that Mimicked Action Tremors and was Associated with Cervical Schwannoma
title_short A Case of Action-Induced Clonus that Mimicked Action Tremors and was Associated with Cervical Schwannoma
title_sort case of action-induced clonus that mimicked action tremors and was associated with cervical schwannoma
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4027665/
https://www.ncbi.nlm.nih.gov/pubmed/24868382
http://dx.doi.org/10.14802/jmd.10013
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