Post right hemispherectomy follow up. Obstructive hydrocephalus. Optic atrophy. Re demonstration of right hemispherectomy with left parietal lobe approached ventriculostomy tube insertion status.There is no evidence of acute ischemic or hemorrhagic lesion on this scan.Multifocal small scattered susceptibility lesions on gradient echo especially on CSF spaces appear to be related to prior surgery related hemosiderin deposition.There are multiple various sized round to elliptical CSF containing areas were seen. They appear to arise form the left lateral ventricle occipital horn area and crossing over underneath of the left corpus callosum and reached to the CSF space on the right side. It is hard to discern that those CSF collection areas are connected with today's MRI, however, the MR signal intensity of the content of those areas appear to be the same and correspond to CSF.Extensive periventricular white matter high signal intensities indicate non specific, no change since prior scan. Posterior fossa structures appear to be normal.The paranasal sinuses and mastoid air cells are clear.
Post right hemispherectomy status and left parietal approach ventriculostomy tube insertion.Multiple round to elliptical CSF containing areas from the left lateral ventricle to the right side CSF space, comparing to head CT scan on Jun 1 2015, no change of their number, configuration and size.No evidence of acute ischemic or hemorrhagic lesion.