Unspecified cerebral artery occlusion with cerebral infarction [434.91] / Unspecified transient cerebral ischemia [435.9], Reason for Study: ^Reason: Follow-up of possible small L cerebellar infarct on June study History: TIA in May No evidence of acute ischemic or hemorrhagic lesion on the scan.Previously reported somewhat patchy enhancing lesions on the inferior aspect of the left cerebellar hemisphere are still demonstrated. The anterior and slightly inferiorly located lesion appears to show tubular shape enhancement on coronal reconstruction, this lesion could represent a developmental venous anomaly. The posterior and laterally located lesion could represent either prominent cortical vein or possible capillary telangiectasia. Patchy bilateral periventricular white matter high signal intensities indicating nonspecific small vessel ischemic disease, no change since prior scan.Scattered high signal intensity lesions on the left cerebellar hemisphere indicating age indeterminate likely chronic ischemic lesions, no change since prior scan.Basilar artery including distal right vertebral artery and the right vertebrobasilar junction shows is significant tortuosity and ectasia indicating atherosclerotic changes such as dolicoectatic changes, comparing to prior scan, there is no significant interval change.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia, or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. The paranasal sinuses and mastoid air cells are clear.
1. No evidence of acute ischemic or hemorrhagic lesion.2. Left cerebellar hemispheric enhancing lesions may represent developmental venous anomaly and either prominent cortical vein or capillary telangiectasia as described above. 3. Dolicoectatic changes of right vertebral artery to the basilar artery indicating atherosclerosis.4. No interval change of nonspecific small vessel ischemic disease and age indeterminate ischemic changes as described above since prior scan.