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Neuroradiology

, Volume 42, Issue 10, pp 756–761 | Cite as

Visibility of the central canal on MRI

  • M. C. Petit-Lacour
  • P. Lasjaunias
  • C. Iffenecker
  • F. Benoudiba
  • M. Hadj Rabia
  • M. Hurth
  • D. Doyon
DIAGNOSTIC NEURORADIOLOGY

Abstract

The central canal of the spinal cord is present at birth and becomes progressively obliterated. Cadaver studies have shown that it may persiste partially or completely. To our knowledge, this entity has not been described on MRI. We reviewed 794 MRI studies of the spinal cord, and found 12 patients (aged 14 to 65 years) who had an intramedullary cavity. The cavity was at the junction of the ventral 1/3 and dorsal 2/3 of the spinal cord, except at the level of the lumbar enlargement, where it was central. It was filiform in most cases, although sometimes fusiform (3 to 4 mm in diameter), and had regular contours. The cavity were thoracic in 69 % of cases. The clinical features were totally unrelated to the image, and there were no anatomical factors (Chiari malformation, dysraphism) predisposing to syringomyelia. The images were perfectly compatible with a persistent central canal, which we interpret as a variant of normal anatomy. Therefore it is important to regard these findings as normal, to avoid unnecessary treatment and follow-up.

Key words Spinal cord, central canal Syringomyelia Magnetic resonance imaging 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • M. C. Petit-Lacour
    • 1
  • P. Lasjaunias
  • C. Iffenecker
    • 1
  • F. Benoudiba
    • 1
  • M. Hadj Rabia
    • 1
  • M. Hurth
    • 2
  • D. Doyon
    • 1
  1. 1.Service de Neuroradiologie Pr. Lasjaunias, Hôpital de Bicêtre, Faculté Paris Sud, 78, rue du général Leclerc, 94275 Kremlin-Bicêtre, France Fax: 01 45 21 23 17FR
  2. 2.Department of Neurosurgery, Hôpital de Bicêtre, Faculté Paris Sud, Kremlin-Bicêtre, FranceFR

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