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Spontaneous intracranial hypotension is a condition characterized by low CSF volume secondary to leakage through a dural defect with no identifiable cause. Patients classically present with orthostatic headaches, but this symptom is not specific to spontaneous intracranial hypotension, and initial misdiagnosis is common. The most prominent features of spontaneous intracranial hypotension on intracranial MR imaging include �brain sag� and diffuse pachymeningeal enhancement, but these characteristics can be seen in several other conditions. Understanding the clinical and imaging features of spontaneous intracranial hypotension and its mimickers will lead to more prompt and accurate diagnoses. Here we discuss conditions that mimic the radiologic and clinical presentation of spontaneous intracranial hypotension as well as other disorders that CSF leaks can imitate. |
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atypical
cerebrospinal fluid,leak
cerebrospinal fluid,pressure
cerebrospinal fluid,pressure low
differential diagnosis
epidural blood patch
headache
headache,positional
hemosiderosis of CNS,superficial
meningeal enhancement
mimics
misdiagnosis
MRI,abnormal
neurologic disease,multiple
pachymeningitis,cranial
pituitary,apoplexy
primary intracranial hypotension
prognosis
sagging of the brain
spontaneous remission
treatment of neurologic disorder
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