Magnetic resonance neurography in the diagnosis of neuropathies of the lumbosacral plexus: a pictorial review

Clin Imaging. 2016 Nov-Dec;40(6):1118-1130. doi: 10.1016/j.clinimag.2016.07.003. Epub 2016 Jul 11.

Abstract

Magnetic resonance neurography (MRN) is an important tool to detect abnormalities of peripheral nerves. This pictorial review demonstrates the MRN features of a variety of neuropathies affecting the lumbosacral plexus (LSP) and lower extremity nerves, drawn from over 1200 MRNs from our institution and supplemented by the literature. Abnormalities can be due to spinal compression, extraspinal compression, malignancy, musculoskeletal disease, iatrogenesis, inflammation, infection, and idiopathic disorders. We discuss indications and limitations of MRN in diagnosing LSP neuropathies. As MRN becomes more widely used, physicians must become familiar with the differential diagnosis of abnormalities detectable with MRN of the LSP.

Keywords: Lumbosacral; Magnetic resonance imaging; Peripheral neuropathy; Plexitis; Plexopathy.

Publication types

  • Review

MeSH terms

  • Diagnosis, Differential
  • Female
  • Herpes Zoster / diagnosis
  • Humans
  • Low Back Pain / etiology
  • Lumbosacral Plexus*
  • Magnetic Resonance Imaging / methods
  • Male
  • Middle Aged
  • Musculoskeletal Diseases / diagnosis
  • Nerve Compression Syndromes / diagnosis
  • Neuritis / diagnosis
  • Peripheral Nerve Injuries / diagnosis
  • Peripheral Nervous System Diseases / diagnosis*
  • Peripheral Nervous System Neoplasms / diagnosis
  • Trauma, Nervous System / diagnosis