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. 2021 Jul 23;63(11):1765–1772. doi: 10.1007/s00234-021-02766-z

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© The Author(s) 2021

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Fig. 3 — Type 1 leak: SIH in a 36-year-old woman with engorgement of the venous sinuses, pachymeningeal enhancement (B: arrow), subdural fluid collections (B: hollow arrow), effaced suprasellar (C: 1.5 mm), and prepontine cisterns (C: 2.7 mm). The mamillopontine distance is normal (C: 7.3 mm). Spinal MRI shows spinal longitudinal extradural fluid (SLEC) (D, E: hollow arrow). Prone dynamic CT myelography shows the ventral leak due to a bony spur (H: arrow) and ventral epidural contrast flowing upwards (F, G: hollow arrow)