Inclusion criteria included (1) cases with MRI or histopathological evidence of EP and (2) patients presenting with neurological symptoms including headache, CSF rhinorrhea, diplopia, sensory loss, weakness, etc.
Exclusion criteria: included an incidental finding of unclear significance or asymptomatic cases, cadaveric studies, articles not having individual patient details, articles not retrieved, articles found in the non-English literature and articles re-publishing a previously reported case.
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