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Skeletal Radiology

, Volume 35, Issue 3, pp 180–184 | Cite as

Lipomatosis of the sciatic nerve: typical and atypical MRI features

  • Bernadette Zhi Ying Wong
  • Kimberly K. Amrami
  • Doris E. Wenger
  • P. James B. Dyck
  • Bernd W. Scheithauer
  • Robert J. Spinner
Case Report

Abstract

Lipomatosis of nerve, also known as fibrolipomatous hamartoma, is a rare condition of nerve, usually affecting the median nerve. The MRI appearance is characteristic. We describe two cases of lipomatosis of nerve involving the sciatic nerve, an extremely unusual location for this lesion, in patients with sciatic neuropathy. These cases share the typical features previously described in the literature for other nerves, but also contain atypical features not previously highlighted, relating to the variability in distribution and extent of the fatty deposition. Recognition of the MRI appearance of this entity is important in order to avoid unnecessary attempts at surgical resection of this lesion.

Keywords

Lipomatosis of nerve Fibrolipomatous hamartoma Sciatic nerve Macrodystrophia lipomatosa MRI 

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Copyright information

© ISS 2005

Authors and Affiliations

  • Bernadette Zhi Ying Wong
    • 1
    • 2
  • Kimberly K. Amrami
    • 3
  • Doris E. Wenger
    • 3
  • P. James B. Dyck
    • 4
  • Bernd W. Scheithauer
    • 5
  • Robert J. Spinner
    • 6
    • 7
  1. 1.Mayo Clinic School of MedicineRochesterUSA
  2. 2.Royal Free and University College Medical SchoolUniversity College LondonLondonUK
  3. 3.Department of RadiologyMayo ClinicRochesterUSA
  4. 4.Department of NeurologyMayo ClinicRochesterUSA
  5. 5.Department of PathologyMayo ClinicRochesterUSA
  6. 6.Department of Neurologic SurgeryMayo ClinicRochesterUSA
  7. 7.Department of OrthopedicsMayo ClinicRochesterUSA

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