[1]Department of Neurology;
“Agioi Anargiroi”Hospital;
14564 Athens;
Greece;
[2]Radiology and CT–Scanning Unit;
Athens Medical Centre;
15125 Athens;
Greece;
[3]Epilepsy Surgery Unit;
Medical School;
University of Athens;
11527 Athens;
Greece;
[4]Department of Neurosurgery;
Evangelismos Hospital;
10676 Athens;
Greece;
[5]Hellenic Center of Neurosurgical Research;
University of Athens;
11527 Athens;
Greece;
Headache; Craniectomy; Cerebrospinal fluid; Intracranial hypotension syndrome; Effusion; Chiari;