[Table/Fig-4]:

Disc Sequestration: Post laminectomy status. Sagittal T2W image (a); Axial T1W image (b); Axial T2W image (c); Axial post contrast T1 fat suppressed image (d); Shows cranially migrated sequestered disc fragment (arrow) at L4 vertebral level compressing the thecal sac. The disc fragment shows no enhancement on postcontrast images. There is thin peripheral rim of enhancement seen around this sequestered fragment suggestive of scar/inflammatory granulation tissue. (All Image left to right)