
Keywords: کرانیوتومی بیفنال; Bifrontal craniotomy; Brain sag; CSF hypovolemia; Intracranial hypotension; Subdural hematoma; cSDH; Chronic subdural hematoma; CSF; Cerebrospinal fluid; CT; Computed tomography; MRI; Magnetic resonance imaging; SDH; Subdural hematoma; SIH; Spontaneous in