Hb-SS disease with acute chest syndrome [D57.01] / Cerebral aneurysm, nonruptured [I67.1], Reason for Study: ^Reason: f/u aneurysm. Yearly eval History: none Brain MRIThere is no evidence of acute ischemic or hemorrhagic lesion.There is right frontal chronic hemorrhage with encephalomalacia, unchanged since prior scan.The ventricles, sulci and cisterns are unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia. 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 a focal aneurysmal luminal outpouching on the left PCA P1 segment. The lesion is measured about 2.7mm and directed posterior and superiorly. Unchanged since 2015.Otherwise, normal ICAs, MCAs and ACAs. Vertebrobasilar system appears to be normal.
1. Right frontal chronic hemorrhagic infarction, unchanged since prior scan.2. No evidence of acute ischemic or hemorrhagic lesion.3. The left PCA P1 segment aneurysm is again seen, unchanged in terms of its configuration and size since 2015.