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Cauda Equina and Filum Terminale Arteriovenous Fistulas: Anatomic and Radiographic Features.
AJNR Am J Neuroradiol. 2020 11; 41(11):2166-2170.AA

Abstract

Intradural AVF below the conus medullaris may develop either on the filum terminale or the cauda equina (lumbosacral and coccygeal radicular nerves). Although not a few filum terminale AVFs are found in the literature, only 3 detailed cauda equina AVFs have been reported. Here, we analyze the angiographic and MR imaging findings of our cauda equina and filum terminale AVF cases, supplemented with literature research to characterize the radiologic features of the 2 entities. On angiography, filum terminale AVFs were invariably supplied by the extension of the anterior spinal artery accompanied by a closely paralleling filum terminale vein. Cauda equina AVFs were fed by either a radicular or a spinal artery or both arteries, often with a characteristic wavy radicular-perimedullary draining vein. On thin-section axial MR imaging, the filum terminale AVF draining vein joined the spinal cord at the conus medullaris apex, but that of the cauda equina AVF joined above the conus medullaris apex.

Authors+Show Affiliations

From the Center for Endovascular Therapy (K.N., A.H.), Division of Neuroendovascular Surgery, Jichi Medical University, Tochigi, Japan knamba@jichi.ac.jp.Department of Neuroendovascular Therapy (Y.N.), St. Luke's International Hospital, Tokyo, Japan.Department of Neurointervention (T.I., M.K.), Osaka City General Hospital, Osaka, Japan.From the Center for Endovascular Therapy (K.N., A.H.), Division of Neuroendovascular Surgery, Jichi Medical University, Tochigi, Japan.Department of Neurosurgery (N.T.), Mie University Graduate School of Medicine, Mie, Japan.Department of Neurointervention (T.I., M.K.), Osaka City General Hospital, Osaka, Japan.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33033040

Citation

Namba, K, et al. "Cauda Equina and Filum Terminale Arteriovenous Fistulas: Anatomic and Radiographic Features." AJNR. American Journal of Neuroradiology, vol. 41, no. 11, 2020, pp. 2166-2170.
Namba K, Niimi Y, Ishiguro T, et al. Cauda Equina and Filum Terminale Arteriovenous Fistulas: Anatomic and Radiographic Features. AJNR Am J Neuroradiol. 2020;41(11):2166-2170.
Namba, K., Niimi, Y., Ishiguro, T., Higaki, A., Toma, N., & Komiyama, M. (2020). Cauda Equina and Filum Terminale Arteriovenous Fistulas: Anatomic and Radiographic Features. AJNR. American Journal of Neuroradiology, 41(11), 2166-2170. https://doi.org/10.3174/ajnr.A6813
Namba K, et al. Cauda Equina and Filum Terminale Arteriovenous Fistulas: Anatomic and Radiographic Features. AJNR Am J Neuroradiol. 2020;41(11):2166-2170. PubMed PMID: 33033040.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cauda Equina and Filum Terminale Arteriovenous Fistulas: Anatomic and Radiographic Features. AU - Namba,K, AU - Niimi,Y, AU - Ishiguro,T, AU - Higaki,A, AU - Toma,N, AU - Komiyama,M, Y1 - 2020/10/08/ PY - 2020/03/22/received PY - 2020/06/01/accepted PY - 2021/11/01/pmc-release PY - 2020/10/10/pubmed PY - 2021/2/24/medline PY - 2020/10/9/entrez SP - 2166 EP - 2170 JF - AJNR. American journal of neuroradiology JO - AJNR Am J Neuroradiol VL - 41 IS - 11 N2 - Intradural AVF below the conus medullaris may develop either on the filum terminale or the cauda equina (lumbosacral and coccygeal radicular nerves). Although not a few filum terminale AVFs are found in the literature, only 3 detailed cauda equina AVFs have been reported. Here, we analyze the angiographic and MR imaging findings of our cauda equina and filum terminale AVF cases, supplemented with literature research to characterize the radiologic features of the 2 entities. On angiography, filum terminale AVFs were invariably supplied by the extension of the anterior spinal artery accompanied by a closely paralleling filum terminale vein. Cauda equina AVFs were fed by either a radicular or a spinal artery or both arteries, often with a characteristic wavy radicular-perimedullary draining vein. On thin-section axial MR imaging, the filum terminale AVF draining vein joined the spinal cord at the conus medullaris apex, but that of the cauda equina AVF joined above the conus medullaris apex. SN - 1936-959X UR - https://www.unboundmedicine.com/medline/citation/33033040/Cauda_Equina_and_Filum_Terminale_Arteriovenous_Fistulas:_Anatomic_and_Radiographic_Features_ L2 - http://www.ajnr.org/cgi/pmidlookup?view=long&pmid=33033040 DB - PRIME DP - Unbound Medicine ER -