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Fig. 1 | Egyptian Journal of Neurosurgery

Fig. 1

From: Corticosteroids for spontaneous intracranial hypotension: a case-report and critical review focusing on pathophysiology and treatment

Fig. 1

MRI of the brain and thoracic spine of the patient with spontaneous intracranial hypotenstion. a Coronal contrast-enhanced T1-weighted brain MRI image showing pachymeningeal gadolinium enhancement (blue arrows). b Coronal contrast-enhanced T1-weighted brain MRI image demonstrating distended and rounded dural venous sinuses (blue arrows). c Sagittal contrast-enhanced T1-weighted brain MRI image indicating venous distension sign (rounding of the cross-section of the dural venous sinuses, blue arrow). d Sagittal contrast-enhanced T1-weighted brain MRI image showing mild reduction of suprasellar cistern and enlargement and hyperemia of the pituitary gland (blue arrow). e Sagittal and T2-weighted MRI of the thoracic region showing dorsal fluid collection in the sub/epidural space at the T2–T10 thoracic vertebra level, causing mild compression of the spinal cord anteriorly (blue arrows). f Midline sagittal contrast-enhanced T1-weighted MRI image of the thoracic region demonstrating marked enhancement of thickened pachyleptomeninges and dilated epidural veins especially at the T6–T8 level (blue arrows). g A hyperintense band or rim around the spinal thecal sac in axial T2-weighted MRI image at the thoracic level (blue arrows), suggestive of CSF leak. h Axial T2-weighted MRI image at T5 level, showing the “floating dural sac sign” (blue arrows)

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