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Spontaneous Resolution of Chiari 1-Associated Syringomyelia: A Report of Two Cases
Background:
Traditional teaching is that Chiari 1 malformations with syrinx should be operated as soon as possible. We present 2 cases of a radiologically proven Chiari 1 malformation with syrinx which were treated nonoperatively and improved radiologically.
Methods:
Two children with an MRI-proven Chiari 1 malformations were followed up nonoperatively for 7 years (2010-2017). One was a boy aged 8 years and the other a girl aged 9 years at first presentation. Their parents were not interested in a surgical option and so it was decided to adopt a wait-and-watch policy. Both patients were followed up with a regular half-yearly clinical examination and yearly MRI studies (2010-2017).
Results:
It was found that, in both of them, the initial cough during swallowing and the headache improved. Serial MRI showed that the hind-brain protrusion was reduced and syrinx diminished or resolved well.
Conclusions:
Some children with Chiari I and syringomyelia may show spontaneous resolution of symptoms and syringomyelia. Large registry studies will be needed to determine how likely it is that Chiari-associated syringes will resolve, and whether there are particular anatomic or neurologic differences between those who require surgery and those who don't.
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