PMC8720017_01
MR images revealed left L4-5 foraminal herniated disc without fragment in the spinal canal.
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fig1
L4-5 foraminal herniated disc without fragment in the spinal canal (Figure 1). Left L4 selective nerve root block remarkably affect.
The herniated fragment was migrated from neural foramen to cranial central canal on discography-enhanced CT.
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fig2
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).
Postdiscogram MR images showed herniated fragment migrated to cranial central canal which was not detected in previous images.
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fig3
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).
2.5 g-weighted disc fragment with annulus fibrosus.
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fig4
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).
PMC8720017_02
MR images revealed right L4-5 foraminal herniated disc without fragment in the spinal canal.
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fig5
He was treated in previous clinic with diagnose of right L4-5 foraminal disc herniation (Figure 5).
Postdiscogram MR images showed herniated fragment migrated from neural foramen to cranial central canal which was not detected in previous images.
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fig6
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).