case_images: PMC5742913_01
case_images: The axial T2-weighted MRI showed an extradural posteriorly migrated disc fragment at the L3-L4 level. Note the separation between the disc and the overlying dural sac
case_images: SNI-8-302-g002.jpg
case_images: PMC5742913_01_SNI-8-302-g002.jpg
case_images: F1
case_images: L4/L5 level (complete motor, reflex, and sensory loss). Lumbar magnetic resonance (MR) showed a compressive ventral extradural lesion at the L3-L4 level that was iso/hypo intense on T1 and hyperintense on the T2 studies, consistent with an acute disc herniation [Figure 1].
case_images: PMC5742913_02
case_images: Saggital T2 MRI image showing the extradura, posteriorly migrated disc fragment at the L3-L4 level
case_images: SNI-8-302-g003.jpg
case_images: PMC5742913_02_SNI-8-302-g003.jpg
case_images: F2
case_images: The MR imaging scan showed a large ventral disc herniation at the L3-4 level resulting in marked thecal sac compression [Figure 2].
case_images: PMC5742913_03
case_images: Saggital T2 contrast MRI image showing the extradural L3-L4 posteriorly migrated disc fragment. Note the lesion/disc herniation enhanced with contrast
case_images: SNI-8-302-g004.jpg
case_images: PMC5742913_03_SNI-8-302-g004.jpg
case_images: F3
case_images: MR imaging showed a well-defined posterior extradural L3-L4 lesion that was hypointense on T1 and hyperintense on T2-weighted studies with accompanying central hypointensity; all findings were consistent with a disc herniation [Figure 3].
case_images: Intraoperative photograph at the L3-L4 level following a laminectomy showing a large ventral disc fragment
case_images: SNI-8-302-g005.jpg
case_images: PMC5742913_03_SNI-8-302-g005.jpg
case_images: F4
case_images: All three patients underwent L3 laminectomy and L3-4 discectomy without fusion [Figure 4].