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Mobile Myxopapillary Ependymoma with Associated Filum Terminale Cyst.
World Neurosurg. 2020 07; 139:337-342.WN

Abstract

BACKGROUND

Intradural ependymal cysts are benign, fluid-filled cysts usually situated along the ventral surface of the spinal cord. There are previous reports of 19 intradural cysts in the literature, including one cyst of the filum terminale. Here, we report for the first time the presence of a radiographically occult filum terminale cyst associated with a myxopapillary ependymoma. We propose that mobility of the tumor may provide indirect evidence of the presence of a cyst.

CASE DESCRIPTION

A 65-year-old male patient presented with a homogenously enhancing ovoid mass measuring 25 mm × 10 mm within the thecal sac at the L3 through L4 levels. Repeat magnetic resonance imaging demonstrated migration of the tumor 12 mm rostrally. Following the L2 through L4 laminectomy and resection of the intradural tumor, we identified a filum terminale ependymal cyst superior to the tumor, which was also resected.

CONCLUSIONS

Ependymal cysts associated with spinal tumors are rare and may be radiographically occult. The change in cyst size may explain tumor mobility. Complete resection of the cyst and histopathologic analysis is recommended to differentiate between ependymal cyst and cystic tumor tissue.

Authors+Show Affiliations

Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA. Electronic address: panos.mastorakos2@nih.gov.Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA.Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA.Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA.Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA.Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA.

Pub Type(s)

Case Reports

Language

eng

PubMed ID

32339736

Citation

Mastorakos, Panagiotis, et al. "Mobile Myxopapillary Ependymoma With Associated Filum Terminale Cyst." World Neurosurgery, vol. 139, 2020, pp. 337-342.
Mastorakos P, Pomeraniec IJ, Shah S, et al. Mobile Myxopapillary Ependymoma with Associated Filum Terminale Cyst. World Neurosurg. 2020;139:337-342.
Mastorakos, P., Pomeraniec, I. J., Shah, S., Shoushtarizadeh, A., Quezado, M. M., & Heiss, J. (2020). Mobile Myxopapillary Ependymoma with Associated Filum Terminale Cyst. World Neurosurgery, 139, 337-342. https://doi.org/10.1016/j.wneu.2020.04.095
Mastorakos P, et al. Mobile Myxopapillary Ependymoma With Associated Filum Terminale Cyst. World Neurosurg. 2020;139:337-342. PubMed PMID: 32339736.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Mobile Myxopapillary Ependymoma with Associated Filum Terminale Cyst. AU - Mastorakos,Panagiotis, AU - Pomeraniec,Isaac Jonathan, AU - Shah,Smit, AU - Shoushtarizadeh,Alireza, AU - Quezado,Martha M, AU - Heiss,John, Y1 - 2020/04/25/ PY - 2020/01/31/received PY - 2020/04/10/revised PY - 2020/04/11/accepted PY - 2021/01/01/pmc-release PY - 2020/4/28/pubmed PY - 2020/9/9/medline PY - 2020/4/28/entrez KW - Cyst KW - Filum terminale KW - Mobile tumor KW - Myxopapillary ependymoma SP - 337 EP - 342 JF - World neurosurgery JO - World Neurosurg VL - 139 N2 - BACKGROUND: Intradural ependymal cysts are benign, fluid-filled cysts usually situated along the ventral surface of the spinal cord. There are previous reports of 19 intradural cysts in the literature, including one cyst of the filum terminale. Here, we report for the first time the presence of a radiographically occult filum terminale cyst associated with a myxopapillary ependymoma. We propose that mobility of the tumor may provide indirect evidence of the presence of a cyst. CASE DESCRIPTION: A 65-year-old male patient presented with a homogenously enhancing ovoid mass measuring 25 mm × 10 mm within the thecal sac at the L3 through L4 levels. Repeat magnetic resonance imaging demonstrated migration of the tumor 12 mm rostrally. Following the L2 through L4 laminectomy and resection of the intradural tumor, we identified a filum terminale ependymal cyst superior to the tumor, which was also resected. CONCLUSIONS: Ependymal cysts associated with spinal tumors are rare and may be radiographically occult. The change in cyst size may explain tumor mobility. Complete resection of the cyst and histopathologic analysis is recommended to differentiate between ependymal cyst and cystic tumor tissue. SN - 1878-8769 UR - https://www.unboundmedicine.com/medline/citation/32339736/Mobile_Myxopapillary_Ependymoma_with_Associated_Filum_Terminale_Cyst_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1878-8750(20)30802-0 DB - PRIME DP - Unbound Medicine ER -