PMC7749963_01
Progression of the cerebellar ectopia. The patient's symptoms began in September 2007 and posterior fossa decompression was done in June 2012. (a) April 2008, (b) October 2008, (c) December 2011 (showing acquired Chiari malformation, flattening of the pons, and sagging of the cerebellar tonsils slightly below the level of the C1 arch), (d) February 2012, (e) September 5, 2012, (f) December 2014.
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F1
MRI scan of the brain showed pachymeningeal enhancement and a progressive acquired Chiari malformation in keeping with findings of intracranial hypotension [Figure 1a and b]. PO before meal 3 times a day improved her nausea and vomiting. Pharmacological treatments for the headaches proved to be ineffective and an MRI of the brain 3 years after the original MRI scans showed an acquired Chiari malformation [Figure 1c]. Two months after surgery, the patient had a reduction in her headaches and was able to walk, and there was a reversal of the cerebellar ectopia on MRI [Figure 1d-f].