Pseudomeningocele

Nerve root avulsion and pseudomeningocele

•        Findings:

–       Abnormal high T2 signal dumbbell-shaped lesion in a high thoracic neural foramen

–       Mass effect on thecal sac

–       Large high T2 collection in the adjacent soft tissues

•        A result of major trauma.

•        Disruption of the meninges and spill of CSF into surrounding tissues

•        Focal collection at the nerve root may appear as a discrete mass and displace thecal sac.