A spontaneous CSF leak, arises idiopathically, and is opposed to traumatically caused CSF leaks. It is one of several types of cerebrospinal fluid leaks caused by one or more holes in the dura . A loss of CSF greater than its rate of production leads to a decreased volume inside the skull known as intracranial hypotension .
CSF leak repair is an infrequently performed procedure, and only limited information is available on the long term success of the surgical techniques that are used. This retrospective chart review includes 95 patients who underwent various types of repair surgery fin- CSF rhinorrhea at the Mayo Clinic.