Assess aneurysm for stability: nasopharyngeal cancer, microhemorrhage versus mets. MRI: There are numerous unchanged subcentimeter non-enhancing lesions with associated susceptibility effect. There is no associated edema with the lesions. There is no evidence of acute infarct. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. There is a small amount of fluid in the right mastoid air cells. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable. There is no evidence of tumor in the nasopharyngeal region, although the imaging is not optimized for assessment of that region.MRA: There is an unchanged 3 mm diameter posteromedially directed right aneurysm arising from the anterior genu of the internal carotid artery. There is no evidence of significant steno-occlusive lesions.
1. Numerous unchanged subcentimeter non-enhancing lesions with associated susceptibility effect likely represent cavernous malformations or chronic microhemorrhages.2. Unchanged 3 mm diameter posteromedially directed right aneurysm arising from the anterior genu of the internal carotid artery.