Other cerebral infarction [I63.8], Reason for Study: ^Reason: Symptomatic basilar stenosis History: pontine infarct Brain MRIThere are scattered restricted diffusion lesions without evidence of blood products at the left side of mid pons indicating acute ischemic infarction without hemorrhagic conversion.There are multifocal bilateral small tissue losses suggesting lacunar infarctions involving left caudate head, bilateral basal ganglia and right periventricular white matter.There are scattered T2/FLAIR high signal intensity lesions on periventricular and centrum semiovale most likely represent non specific small vessel ischemic disease.The ventricles, sulci and cisterns are unremarkable. The midline structures and cranial-cervical junction are normal.The paranasal sinuses and mastoid air cells are clear.Brain MRA3D time of flight MOTSA MRA brain images with maximum intensity projections of the anterior/posterior intracranial circulation demonstrate long segment more than 50% luminal stenosis (about 18mm length) including focal near total occlusion of the distal basilar artery. The distal left vertebral artery is not shown.Bilateral ICAs, MCAs and ACAs appear to be normal. There is no evidence of intracranial arterial aneurysm.
1. Acute ischemic infarction involving left side of mid-pons without evidence of hemorrhagic conversion.3. Long segment basilar artery stenosis (more than 50% with about 18mm length) including near total occlusion of the distal basilar artery. 