ESRD, IV drug use: here with abnormal writhing movements of arms and legs. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is a subcentimeter focus of cerebrospinal fluid signal in the periventricular white matter adjacent to the left frontal horn of the lateral ventricle. There is also mild confluent T2 hyperintensity in the anterior periventricular white matter. The ventricles and basal cisterns are otherwise normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Probable focus of chronic lacunar infarction in the left frontal lobe periventricular region. Otherwise, no evidence of acute intracranial hemorrhage, mass, or acute infarct.