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A 6-year-old boy with headache and syncope.

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Presentation on theme: "A 6-year-old boy with headache and syncope."— Presentation transcript:

1 A 6-year-old boy with headache and syncope.
A 6-year-old boy with headache and syncope. Sagittal T2WI (A) and precontrast T1WI (B) show enlargement of the third and fourth ventricles with flattening of the corpus callosum. Sagittal PC-MR image demonstrates the black-coded flow at anterior fourth ventricle (C). Early-phase postcontrast T1WI clearly shows a non-communicating type cystic lesion leading to fourth ventricle enlargement (D-F). O. Algin, and B. Turkbey AJNR Am J Neuroradiol 2013;34:14-22 ©2013 by American Society of Neuroradiology

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