Aneurysm yearly surveillance imaging. MRI: There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is a left middle cranial fossa arachnoid cyst that measures up to approximately 40 mm overlying the flattened left anterior temporal pole, which is unchanged. There is also an unchanged subcentimeter cystic focus in the right frontal lobe white matter adjacent to the frontal horn of the right lateral ventricle. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable. There is a left maxillary sinus retention cyst that measures up to 15 mm in width. MRA: There is an unchanged outpouching along the medial aspect of the left internal carotid artery along the anterior genu that measures up to 3 mm, with a 2 mm wide neck. There is also an unchanged 2 mm wide outpouching with a 2 mm wide neck along the inferomedial aspect of the opthalmic segment of the right internal carotid artery. There is an unchanged punctate outpouching along the left aspect of the ACOM complex. There is no evidence of significant steno-occlusive lesions.
1. Unchanged aneurysm along the medial aspect of the left internal carotid artery along the anterior genu that measures up to 3 mm.2. Unchanged 2 mm wide outpouching along the inferomedial aspect of the opthalmic segment of the right internal carotid artery.3. Unchanged punctate outpouching along the left aspect of the ACOM complex. 4. Unchanged left middle cranial fossa arachnoid cyst. 5. Unchanged subcentimeter cystic focus in the right frontal lobe white matter adjacent to the frontal horn of the right lateral ventricle.