Neuromuscular choristoma of the sciatic nerve and lumbosacral plexus: an association with nerve-territory undergrowth in the pelvis affecting soft tissue and bone

Ravi Kumar, B. Matthew Howe, Kimberly K. Amrami, Robert J. Spinner

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Background: Neuromuscular choristomas (NMC) are rare congenital lesions with differentiated muscle found within peripheral nerves. Patients often present with progressive neuropathy, undergrowth of the affected limb, and limb length discrepancy. In the sciatic nerve (the most common location of NMC), this may lead to specific manifestations in the distal limb, including progressive neuropathy, a shortened atrophic limb and a cavus foot. We hypothesized that the presence of NMC of the sciatic nerve (proximal to the sciatic notch) extending to the lumbosacral plexus could lead to abnormalities in proximal nerve territories (i.e., nerve, muscle and bone) within the hemipelvis. Methods: A retrospective review of all cases of sciatic nerve NMCs diagnosed at the Mayo Clinic was performed. Results: Seven patients were identified with sciatic nerve NMCs extending proximal and distal to the sciatic notch. Four patients with NMCs had denervation of muscles within the pelvis and ipsilateral undergrowth of bone which resulted in three cases of hip dysplasia. To our knowledge, the finding of proximal nerve-territory soft tissue and bony undergrowth (including hip dysplasia) in patients with NMCs involving the sciatic nerve and lumbosacral plexus has not previously been recognized. Conclusion: This finding will aid in both the diagnosis of the disease and an understanding of associated conditions.

Original languageEnglish (US)
Pages (from-to)1041-1046
Number of pages6
JournalActa Neurochirurgica
Volume156
Issue number5
DOIs
StatePublished - May 1 2014

Fingerprint

Lumbosacral Plexus
Choristoma
Sciatic Nerve
Pelvis
Bone and Bones
Extremities
Hip Dislocation
Muscle Denervation
Muscles
Peripheral Nerves

Keywords

  • Desmoid
  • Fibromatosis
  • Hip dysplasia
  • Neuromuscular choristoma
  • Sciatic nerve

ASJC Scopus subject areas

  • Clinical Neurology
  • Surgery
  • Medicine(all)

Cite this

Neuromuscular choristoma of the sciatic nerve and lumbosacral plexus : an association with nerve-territory undergrowth in the pelvis affecting soft tissue and bone. / Kumar, Ravi; Howe, B. Matthew; Amrami, Kimberly K.; Spinner, Robert J.

In: Acta Neurochirurgica, Vol. 156, No. 5, 01.05.2014, p. 1041-1046.

Research output: Contribution to journalArticle

Kumar, Ravi ; Howe, B. Matthew ; Amrami, Kimberly K. ; Spinner, Robert J. / Neuromuscular choristoma of the sciatic nerve and lumbosacral plexus : an association with nerve-territory undergrowth in the pelvis affecting soft tissue and bone. In: Acta Neurochirurgica. 2014 ; Vol. 156, No. 5. pp. 1041-1046.
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