This is a 5-year-old male with a history of Dandy-Walker malformation with P. with a VP shunt who presents with behavioral changes. Please evaluate ventricles and for shunt malformation. Changes consistent with Dandy-Walker malformation with large posterior fossa cyst which is continuous with the fourth ventricle. The VP shunt catheter is located in the posterior fossa within the fourth ventricle. When compared to the prior MRI in 2007 there are no changes in the size of the posterior fossa cyst. There is no significant ventricular prominence. There is an interval slight decrease in the frontal horns of the lateral ventricles.There is no evidence of intracranial hemorrhage, mass or edema.
1. Dandy-Walker malformation with VP shunt catheter located in the posterior fossa cyst.2. There are no changes in the size of the posterior fossa cyst. 3. No significant ventricular prominence.