PMC3981231_01
A) Trapped fourth ventricle. B) The trapped fourth ventricle lead to syringomyelia. C) Shunting the fourth ventricle with regression of the fourth ventricle size and regression of the syringomyelia.
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PMC3981231_01_cp-2013-1-e1-g001.jpg
fig001
An entire resolution of the trapped fourth ventricle was confirmed on CT scan (Figure 1).