Disorientation, unspecified [R41.0], Reason for Study: ^Reason: eval for structural lesions, vascular dementia History: cognitive decline, gait instability No evidence of acute ischemic or hemorrhagic lesion.Right frontal approach ventriculostomy tube is seen and the tip location is at the level of the right side foramen of Monro. There are susceptibility artifacts along the ventriculostomy tube tract indicating ventriculostomy track blood products. There is also susceptibility lesions on the right periventricular white matter with focal tissue loss indicating prior hemorrhagic infarction.Ventricle size appears to be slightly enlarged. Although different modality, comparing to prior head CT scan performed on Jul 30 2015, ventricle size does not show any significant interval change. Patchy scattered high signal intensities on periventricular white matter and centrum semiovale indicate non specific small vessel ischemic disease. The cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.The pituitary gland appears to be slightly bigger than usual (11mm x 10.4mm) size with slightly upward convexity. Thus, if clinically indicated, dedicated pituitary gland imaging and/or hormonal assay can be considered.
1. Right frontal approach ventriculostomy status, no significant interval change of ventricle size comparing to prior CT scan.2. No evidence of acute ischemic or hemorrhagic lesion on this scan.3. Nonspecific small vessel ischemic disease with chronic hemorrhagic infarction on the right periventricular white matter as described above.