case_images: PMC10480523_01
case_images: Contrast enhanced computed tomography (CT) imaging and magnetic resonance imaging (MRI) performed using a 3.0 T system. (A) Axial CT image. (B) Sagittal CT image. (C) Axial fat-suppressed T2-weighted MRI image. (D) Sagittal fat-suppressed T2-weighted MRI image. A multifocal cystic structure is visible dorsally on the dura at the Th12-L3 level in the spinal canal (yellow arrowhead in A, B; orange arrowhead in C, D). Contrast effects are present on the left lateral intervertebral foramen at the L1-2 level and on the erector spinae near the L1/2 intervertebral joint (A, B). A markedly high fat-suppressed T2-weighted image signal in the left intervertebral joint at the level of L1/2 is suggestive of fluid retention (C, D). The perivertebral foramen and erector spinae show high fat-suppressed T2-weighted image signals mainly at the L2 level, indicating inflammatory spillover (C, D). No abscess formation in the psoas major muscle or bone marrow edema in the vertebral body is visible.
case_images: gr1.jpg
case_images: PMC10480523_01_gr1.jpg
case_images: fig0005
case_images: Contrast-enhanced thoracoabdominal computed tomography (CT) was performed, which revealed a large epidural mass in the spinal canal spanning the level of the 12th thoracic vertebra to the 3rd lumbar vertebra (Fig. 1A, C). Magnetic resonance imaging (MRI) was performed, which led to the diagnosis of facet joint arthritis with lumbar SEA (Fig. 1B, D).