Emergent image-guided treatment of a large CSF leak to reverse "in-extremis" signs of intracranial hypotension.

We report the use of an emergent, targeted fibrin spinal epidural blood patch with subarachnoid saline infusion to rapidly reverse "in-extremis" clinical and imaging signs of posterior-fossa coning brought about by acute-on-chronic intracranial hypotension, itself consequent to a cervicothoracic CSF leak. Treatment resulted in a dramatic recovery and eventual discharge with return to normal lifestyle and occupation. The clinical and imaging danger signs are reviewed; fibrin patch technique and potential pitfalls in postprocedure management are analyzed.