9 years, Female, Reason: eval the prepontine cists ern, and interval change since yesterday History: improved clinical status, pre op planning for ventriculoscopy. Examination is limited to sequences for operative planning. Again seen is diffuse ventriculomegaly involving the lateral, third, and fourth ventricles consistent with hydrocephalus related to fourth ventricular outflow obstruction. There is evidence of transependymal flow as seen previously. Right transfrontal EVD has been placed with its tip in the right frontal horn abutting the septum pellucidum. Ventricular size is similar to examination from 4/19/2016. There is effacement of the prepontine cistern as noted previously and deformity of the posterior aspect of the pons related to mass effect. Postsurgical changes related to Chiari decompression are again seen.
Limited sequences for operative planning demonstrate interval placement of right transfrontal EVD for obstructive hydrocephalus. No significant change in size of the ventricular system compared to 4/19/2016.