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Pediatric Radiology

, Volume 42, Issue 8, pp 952–958 | Cite as

Localized hypertrophic neuropathy of the sciatic nerve in children: MRI findings

  • Adrien Roux
  • Catherine Tréguier
  • Bertrand Bruneau
  • Franck Marin
  • Laurent Riffaud
  • Philippe Violas
  • Anne Michel
  • Yves Gandon
  • Jean-Yves Gauvrit
Original Article

Abstract

Background

Localized hypertrophic neuropathy (LHN) of the sciatic nerve in children is a rare condition characterized by a painless neurological deficit in the sciatic nerve territory.

Objective

To demonstrate the role of MRI using a specific protocol and describe the primary findings in LHN.

Materials and methods

Imaging in four children (age 2 years to 12 years) is presented. All children presented with lower limb asymmetry. Three had a steppage gait. LHN was confirmed by electrophysiological studies and by MRI of the whole sciatic nerve with a dedicated protocol covering the lumbar spine and the lower limb.

Results

There were four direct MRI findings: (1) linear and focal hypertrophy with progressive enlargement of a peripheral nerve or plexus diameter, (2) abnormal hyperintensity of the nerve on T2-weighted images, (3) preserved fascicular configuration, and (4) variable enhancement after intravenous gadolinium administration. In addition there were atrophy and fatty infiltration of innervated muscles. MRI was helpful for determining the extent of lesions and in excluding peripheral nerve compression or tumour.

Conclusion

MRI of the whole sciatic nerve is the method of choice for diagnosing LHN of the sciatic nerve.

Keywords

Localized hypertrophic neuropathy Intraneural perineurioma Sciatic nerve Child 

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Adrien Roux
    • 1
  • Catherine Tréguier
    • 1
  • Bertrand Bruneau
    • 1
  • Franck Marin
    • 1
  • Laurent Riffaud
    • 2
  • Philippe Violas
    • 3
  • Anne Michel
    • 4
  • Yves Gandon
    • 1
  • Jean-Yves Gauvrit
    • 1
  1. 1.Department of Radiology, Hopital SudUniversity HospitalRennes cedex 2France
  2. 2.Department of Pediatric Neurosurgery, Hopital SudUniversity HospitalRennesFrance
  3. 3.Department of Pediatric Surgery, Hopital SudUniversity HospitalRennesFrance
  4. 4.Department of Neurological Functional Explorations, Hopital SudUniversity HospitalRennesFrance

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