Discovering spontaneous intracranial hypotension after failed middle meningeal artery embolization for subdural hematomas: illustrative cases.

The authors show that, if SDH recurs after initial treatment with MMA embolization, then SIH should be strongly considered and treated with EBPs. Further investigation is required to determine the role of targeted or blind EBPs and the use of imaging to find the source of occult CSF leaks causing SIH.