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

Figure 15

83-years male, diabetic patient non-responsive to insulin therapy, presenting chronic pain in the lower limbs. MRN images in coronal STIR 3D SPACE MPR (a), axial T2 fat suppression (b), axial T1 VIBE subtraction (c) and coronal T1 VIBE subtraction (d) show left femoral nerve (solid arrow) thickening with inflammatory signs, throughout from its origin to the thigh, associated to diffuse edema perineural planes. Fluid is seen around the muscle, and along the neural path (star). Obturator nerve (arrowhead) is discretely thickened and with inflammatory signals since its origin to distal portions. These findings are suggestive for inflammatory polyradiculoneuropathy.

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