PMC6744799_01
After performing a valveless lumboperitoneal shunt, the cerebral MRI in sagittal section showed an acquired Chiari malformation.
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F1
The cerebral magnetic resonance imaging (MRI) showed a ptosis of the cerebellar tonsils and a disappearance of the cisterna magna [Figure 1].
Preoperative cerebral MRI in sagittal section. There was no Chiari malformation.
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F2
This herniation was not present before shunt was performed [Figure 2].
After putting a pressure-regulated lumboperitoneal shunt valve, the cerebral magnetic resonance imaging in sagittal section showed a reascending of the cerebellar amygdala.
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F3
The last cerebral MRI showed resolution of the Chiari I malformation [Figure 3].