Secondary malignant neoplasm of bone [C79.51] / Intrahepatic bile duct carcinoma [C22.1], Reason for Study: ^Reason: brain mets vs stroke History: slurred speech Brain MRINo evidence of acute ischemic or hemorrhagic lesion.There is a focal susceptibility lesion on the right basal ganglia (series 900, image 9), however the lesion is not associated with the surrounding edema or other evidence of acute hemorrhage, therefore, this is nonspecific likely represent focal parenchymal calcification or chronic petechial hemorrhage.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. The paranasal sinuses are clear.Focal opacifications of bilateral mastoid air cells are seen.Brain MRA3D time of flight MOTSA MRA brain images with maximum intensity projections of the anterior/posterior intracranial circulation demonstrate normal ICAs, MCAs and ACAs. Vertebrobasilar system appears to be normal. No evidence of significant intracranial arterial luminal stenosis. No evidence of intracranial arterial aneurysm.
1. No evidence of acute ischemic or hemorrhagic lesion.2. Normal brain MRA 