case_images: PMC9663226_01
case_images: Preoperative magnetic resonance imaging (MRI) scan. This sagittal T2-weighted MRI image shows a hyperintense cystic lesion on the left side at the L4-5 level.
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case_images: PMC9663226_01_CRIOR2022-2519468.001.jpg
case_images: fig1
case_images: However, its wall was thicker, and its internal content was clearer than before (Figure 1).
case_images: Preoperative magnetic resonance imaging (MRI) scan. This coronal T2-weighted MRI image shows cystic lesions on both sides, with each lesion arising from the right L4-5 facet joint.
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case_images: PMC9663226_01_CRIOR2022-2519468.002.jpg
case_images: fig2
case_images: Together, these had caused mild central canal stenosis and severe left L5 lateral recess stenosis, with left L5 traversing nerve root compression (Figures 2 and 3).
case_images: Preoperative magnetic resonance imaging (MRI) scan. This axial T2-weighted MRI image shows a cystic lesion (red arrow) arising from the right L4-5 facet joint, causing the narrowing of the right neural foramina. Bilateral facet synovial cysts are also evident.
case_images: CRIOR2022-2519468.003.jpg
case_images: PMC9663226_01_CRIOR2022-2519468.003.jpg
case_images: fig3
case_images: Together, these had caused mild central canal stenosis and severe left L5 lateral recess stenosis, with left L5 traversing nerve root compression (Figures 2 and 3).
case_images: Preoperative magnetic resonance imaging (MRI) scan. This sagittal T2-weighted MRI image shows a hyperintense cystic lesion on the right side at the L4-5 level.
case_images: CRIOR2022-2519468.004.jpg
case_images: PMC9663226_01_CRIOR2022-2519468.004.jpg
case_images: fig4
case_images: Its size was unchanged at approximately 0.5 cm (Figure 4), causing right lateral recess stenosis with right L5 traversing nerve root compression.
case_images: Preoperative X-ray film. These anteroposterior and lateral views reveal grade 1 spondylolisthesis of L4 over L5.
case_images: CRIOR2022-2519468.005.jpg
case_images: PMC9663226_01_CRIOR2022-2519468.005.jpg
case_images: fig5
case_images: There was also a grade 1 spondylolisthesis of L4 over L5 (Figure 5).
case_images: Preoperative X-ray films. No further instability of L4 over L5 is evident in upright lateral flexion and extension views.
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case_images: PMC9663226_01_CRIOR2022-2519468.006.jpg
case_images: fig6
case_images: Upright lateral flexion and extension X-rays of lumbosacral spine showed no further instability of L4 over L5 (Figure 6).
case_images: (a) Intraoperative image. It shows the removal of the facet cyst (black arrow) alongside the neural structure ( ). (b) Intraoperative image. No neural structure compression remains after cyst removal ( ).
case_images: CRIOR2022-2519468.007.jpg
case_images: PMC9663226_01_CRIOR2022-2519468.007.jpg
case_images: fig7
case_images: There was more adhesion to the thecal sac on its left side than on its right side (Figures 7(a) and 7(b)).
case_images: Postoperative X-ray films at the 1-year follow-up. Increased instability is not apparent in either the anteroposterior or the lateral view.
case_images: CRIOR2022-2519468.008.jpg
case_images: PMC9663226_01_CRIOR2022-2519468.008.jpg
case_images: fig8
case_images: Postoperative lumbosacral spine X-ray films and MRI at 1 year showed no further increase in segmental instability (Figure 8) and the absence of bilateral cysts (Figures 9 and 10).
case_images: Postoperative magnetic resonance imaging (MRI) scan at the 1-year follow-up. This axial T2-weighted MRI image confirms the absence of bilateral cysts.
case_images: CRIOR2022-2519468.009.jpg
case_images: PMC9663226_01_CRIOR2022-2519468.009.jpg
case_images: fig9
case_images: Postoperative lumbosacral spine X-ray films and MRI at 1 year showed no further increase in segmental instability (Figure 8) and the absence of bilateral cysts (Figures 9 and 10).
case_images: Postoperative magnetic resonance imaging (MRI) scan at the 1-year follow-up. This sagittal T2-weighted MRI image confirms the absence of bilateral cysts.
case_images: CRIOR2022-2519468.010.jpg
case_images: PMC9663226_01_CRIOR2022-2519468.010.jpg
case_images: fig10
case_images: Postoperative lumbosacral spine X-ray films and MRI at 1 year showed no further increase in segmental instability (Figure 8) and the absence of bilateral cysts (Figures 9 and 10).