Abstract
Intracranial volume compensatory changes explained by the Monro-Kellie hypothesis (MKH) occur in spontaneous intracranial hypotension (SIH) and may be seen on MR imaging.[1][1] This case illustrates previously unreported findings on postcontrast fluid-attenuated inversion recovery (FLAIR) imaging
Highlights
A 52-year-old man had a 3-year history of intermittent orthostatic headache relieved by lying down
While postcontrast FLAIR has been useful in various intracranial lesions, its role in SIH has not been studied
If the pachymeningeal venous dilation alone is not sufficient to compensate for the CSF loss, fluid extravasation persists and leads to subdural effusions.[3]
Summary
A 52-year-old man had a 3-year history of intermittent orthostatic headache relieved by lying down. While postcontrast FLAIR has been useful in various intracranial lesions, its role in SIH has not been studied.
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