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Secondary Neurulation Defects-1 : Retained Medullary Cord
Retained medullary cord (RMC) is a relatively recent term. Pang et al. newly defined the RMC as a late arrest of secondary neurulation leaving a non-functional vestigial portion at the tip of the conus medullaris. RMC, which belongs to the category of closed spinal dysraphism, is a cord-like structu...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Korean Neurosurgical Society
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7218196/ https://www.ncbi.nlm.nih.gov/pubmed/32336057 http://dx.doi.org/10.3340/jkns.2020.0052 |
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author | Kim, Kyung Hyun Lee, Ji Yeoun Wang, Kyu-Chang |
author_facet | Kim, Kyung Hyun Lee, Ji Yeoun Wang, Kyu-Chang |
author_sort | Kim, Kyung Hyun |
collection | PubMed |
description | Retained medullary cord (RMC) is a relatively recent term. Pang et al. newly defined the RMC as a late arrest of secondary neurulation leaving a non-functional vestigial portion at the tip of the conus medullaris. RMC, which belongs to the category of closed spinal dysraphism, is a cord-like structure that is elongated from the conus toward the cul-de-sac. Because intraoperative electrophysiological confirmation of a non-functional conus is essential for the diagnosis of RMC, only a tentative or an assumptive diagnosis is possible before surgery or in cases of limited surgical exposure. We suggest the term ‘possible RMC’ for these cases. An RMC may cause tethered cord syndrome and thus requires surgery. This article reviews the literature to elucidate the pathoembryogenesis, clinical significance and treatment of RMCs. |
format | Online Article Text |
id | pubmed-7218196 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Korean Neurosurgical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-72181962020-05-28 Secondary Neurulation Defects-1 : Retained Medullary Cord Kim, Kyung Hyun Lee, Ji Yeoun Wang, Kyu-Chang J Korean Neurosurg Soc Review Article Retained medullary cord (RMC) is a relatively recent term. Pang et al. newly defined the RMC as a late arrest of secondary neurulation leaving a non-functional vestigial portion at the tip of the conus medullaris. RMC, which belongs to the category of closed spinal dysraphism, is a cord-like structure that is elongated from the conus toward the cul-de-sac. Because intraoperative electrophysiological confirmation of a non-functional conus is essential for the diagnosis of RMC, only a tentative or an assumptive diagnosis is possible before surgery or in cases of limited surgical exposure. We suggest the term ‘possible RMC’ for these cases. An RMC may cause tethered cord syndrome and thus requires surgery. This article reviews the literature to elucidate the pathoembryogenesis, clinical significance and treatment of RMCs. Korean Neurosurgical Society 2020-05 2020-04-27 /pmc/articles/PMC7218196/ /pubmed/32336057 http://dx.doi.org/10.3340/jkns.2020.0052 Text en Copyright © 2020 The Korean Neurosurgical 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/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Review Article Kim, Kyung Hyun Lee, Ji Yeoun Wang, Kyu-Chang Secondary Neurulation Defects-1 : Retained Medullary Cord |
title | Secondary Neurulation Defects-1 : Retained Medullary Cord |
title_full | Secondary Neurulation Defects-1 : Retained Medullary Cord |
title_fullStr | Secondary Neurulation Defects-1 : Retained Medullary Cord |
title_full_unstemmed | Secondary Neurulation Defects-1 : Retained Medullary Cord |
title_short | Secondary Neurulation Defects-1 : Retained Medullary Cord |
title_sort | secondary neurulation defects-1 : retained medullary cord |
topic | Review Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7218196/ https://www.ncbi.nlm.nih.gov/pubmed/32336057 http://dx.doi.org/10.3340/jkns.2020.0052 |
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