Festooned dura (CSF leak)
The festooned appearance of the spinal dural sac has been described in cases of CSF leak resulting in the combination of epidural fluid and craniospinal hypotension/hypovolemia. The theca collapses down upon the cord but kept attached at multiple points by the epidural ligaments 1.
- 1. Chiapparini L, Farina L, D'Incerti L, Erbetta A, Pareyson D, CarrieroM R, Savoiardo M. Spinal radiological findings in nine patients with spontaneous intracranial hypotension. (2002) Neuroradiology. 44 (2): 143-50; discussion 151-2. Pubmed