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Figure 2 | Journal of Orthopaedic Surgery and Research

Figure 2

From: Diagnostic challenge: bilateral infected lumbar facet cysts - a rare cause of acute lumbar spinal stenosis and back pain

Figure 2

Right to left sagittal T2 MRI images with their associated CT sagittal reconstructions beneath, show the fluid-like (isodense and isointense to CSF) signal in the right greater than left facet joints, as well as diffusely increased signal in the adjacent paravertebral muscles. (2A and C) The midline sagittal MRI image shows the compressive epidural portion of the cyst, with a stalk that trails into the interspinous space (dotted line), where it communicates with the facet cysts. (2B) The CT images show non-specific chronic destructive changes to the L4/5 facet, typical of uncomplicated lumbar facet cysts. (2D, E and F)

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