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Figure 1 :Composite fi gure showing classic MRI features of SIH. Gadolinium enhanced T1 weighted coronal (A) and axial (B) MRI brain showing diffuse pachymeningeal enhancement (arrows) and bilateral thin subdural hygromas (arrowheads) over cerebral convexities (Case 2) (C): Midsaggital T1W image shows downward descent (“sagging”) of brainstem and cerebellum, with flattening of the pons, narrowing of the prepontine cistern (arrowheads) and descent of cerebellar tonsils (arrow). (Case 1)

Figure 1 :Composite fi gure showing classic MRI features of SIH. Gadolinium enhanced T1 weighted coronal (A) and axial (B) MRI brain showing diffuse pachymeningeal enhancement (arrows) and bilateral thin subdural hygromas (arrowheads) over cerebral convexities (Case 2) (C): Midsaggital T1W image shows downward descent (“sagging”) of brainstem and cerebellum, with flattening of the pons, narrowing of the prepontine cistern (arrowheads) and descent of cerebellar tonsils (arrow). (Case 1)