Dorsal migration of lumbar disc fragments causing cauda equina syndromes: A three case series and literature review.

Background: Dorsal migration of an intervertebral lumbar disc fragment is exceedingly rare and may result in spinal cord or cauda equina compression. Radiologically, these lesions may be misdiagnosed as extradural masses or epidural hematomas.

Case Description: We present three cases involving dorsal migration of sequestered lumbar disc fragments resulting in cauda equina syndromes.