Demystifying MR Neurography of the Lumbosacral Plexus: From Protocols to Pathologies

Figure 14

43-years male in late postoperative stage of gastroplasty with progressive low back pain and febrile spikes. MRN images in coronal T1 VIBE post contrast (a), axial T1 VIBE post contrast (b), coronal STIR coronal diffusion-weighted (c) and coronal STIR 3D SPACE (d) show fluid collection in the surgical bed at the right iliopsoas muscle, with intense peripheral contrast enhancement (solid arrow). The L3 nerve root (arrowhead) presents signs of neuropathy. The right L4 nerve root (star) emerges through the surgical bed and is also diffusely thickened, with edema and contrast enhancement throughout its course, up to the level of the inguinal region.

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