PMC3463835_01
Normal sagittal view of the patient's cranial MRI at initial diagnosis of pseudotumor cerebri
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F1
Serial lumbar punctures revealed elevated opening pressures consistent with idiopathic intracranial hypertension, i.e. pseudotumor cerebri [Figure 1].
Sagittal cervical MRI of the same patient 10 years post lumboperitoneal shunting demonstrating a new "acquired" Chiari malformation and cervical syrinx
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F2
Repeat MRI of the head and cervical spine demonstrated an acquired Chiari I malformation with cerebellar tonsillar ectopia extending 16 mm below the foramen magnum, and a cervical syrinx from C2 extending to the T8 level [Figure 2].
Sagittal cervical MRI 6 months after ligation of the lumbar shunt, placement of a ventricular shunt, and suboccipital decompression with resolution of the syrinx and Chiari malformation
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F3
A follow-up MRI done 6 months postoperatively revealed a complete resolution of both the Chiari malformation and the syrinx [Figure 3].