case_images: PMC8720017_01
case_images: MR images revealed left L4-5 foraminal herniated disc without fragment in the spinal canal.
case_images: CRIOR2021-5546530.001.jpg
case_images: PMC8720017_01_CRIOR2021-5546530.001.jpg
case_images: fig1
case_images: L4-5 foraminal herniated disc without fragment in the spinal canal (Figure 1). Left L4 selective nerve root block remarkably affect.
case_images: The herniated fragment was migrated from neural foramen to cranial central canal on discography-enhanced CT.
case_images: CRIOR2021-5546530.002.jpg
case_images: PMC8720017_01_CRIOR2021-5546530.002.jpg
case_images: fig2
case_images: On disco-CT and postdiscogram MR images, herniated fragment was migrated from neural foramen to cranial central canal which was not detected in previous images (Figures 2 and 3).
case_images: Postdiscogram MR images showed herniated fragment migrated to cranial central canal which was not detected in previous images.
case_images: CRIOR2021-5546530.003.jpg
case_images: PMC8720017_01_CRIOR2021-5546530.003.jpg
case_images: fig3
case_images: On disco-CT and postdiscogram MR images, herniated fragment was migrated from neural foramen to cranial central canal which was not detected in previous images (Figures 2 and 3).
case_images: 2.5 g-weighted disc fragment with annulus fibrosus.
case_images: CRIOR2021-5546530.004.jpg
case_images: PMC8720017_01_CRIOR2021-5546530.004.jpg
case_images: fig4
case_images: Observing the neural foramen, the herniated disc fragment was migrated from neural foramen to cranial central canal. 2.5 g-weighted disc fragment with annulus fibrosus was extirpated with one piece (Figure 4).
case_images: PMC8720017_02
case_images: MR images revealed right L4-5 foraminal herniated disc without fragment in the spinal canal.
case_images: CRIOR2021-5546530.005.jpg
case_images: PMC8720017_02_CRIOR2021-5546530.005.jpg
case_images: fig5
case_images: He was treated in previous clinic with diagnose of right L4-5 foraminal disc herniation (Figure 5).
case_images: Postdiscogram MR images showed herniated fragment migrated from neural foramen to cranial central canal which was not detected in previous images.
case_images: CRIOR2021-5546530.006.jpg
case_images: PMC8720017_02_CRIOR2021-5546530.006.jpg
case_images: fig6
case_images: The patient was introduced to our facility, and reexamined MR images showed herniated fragment migrated from neural foramen to cranial central canal which was not detected in previous images (Figure 6).