The patient is a 5-year-old female with history of teratoid rhabdoid tumor status post radiation. Status post VPS revision. Stable from the previous exam are craniotomy and parenchymal defects, the approximately 17 mm hyperattenuating left CP angle mass and calcification in the dentate nuclei and pons.Ventricular volumes are mildly enlarged, similar to the prior study. Right frontal shunt catheter tip terminates near midline in the right lateral ventricle. Hypoattenuation of the white matter adjacent to the ventricles could be due to transependymal edema or white matter disease secondary to treatment. A vague hyper-attenuation in the left cerebellar tonsil could be residual of the known second lesion seen on MRI. No evidence of intracranial hemorrhage. Extra-axial fluid along the posterior calvarium is unchanged.The calvaria and skull base are radiographically normal except for postsurgical changes. There is abnormal opacity in the right ethmoid and maxillary sinuses, but otherwise the visualized paranasal sinuses and mastoid air cells are normally pneumatized.
Stable hydrocephalus and postoperative changes as described above with no evidence of intracranial hemorrhage.