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A rare closed dysraphism with terminal stalk characterized by persistent rudimentary spinal cord below conus. It contains non-functional neural tissue and is typically isolated. The diagnostic is suggested by attenuated conus without fat, further confirmed by pathological analysis (glioneuronal core with ependyma-lined lumen, nerve roots, and dorsal root ganglia). Differential diagnostic with intraoperative neurophysiological monitoring is mandatory as neuroimaging fails to distinguish it from functional conus.
No clinical trials have been registered for retained medullary cord.
4 publications have been identified in PubMed for retained medullary cord. Research spans Review / Meta-Analysis (25%), Case Report / Case Series (25%), and Basic Science / Preclinical (25%).
Nadeem M (2025). [PMID: 40266332](https://pubmed.ncbi.nlm.nih.gov/40266332/). *Childs Nerv Syst*. [Case Report / Case Series]
Kurogi A (2024). [PMID: 39777185](https://pubmed.ncbi.nlm.nih.gov/39777185/). *Surg Neurol Int*. [Review / Meta-Analysis]
Lee SB (2024). [PMID: 39604489](https://pubmed.ncbi.nlm.nih.gov/39604489/). *Sci Rep*. [Epidemiology / Natural History]
Murakami N (2024). [PMID: 39372996](https://pubmed.ncbi.nlm.nih.gov/39372996/). *Surg Neurol Int*. [Basic Science / Preclinical]
Data assembled from 3 of 12 sources · Last updated Sep 19, 2026, 4:30 PM UTC
European rare disease database