Dyslexia and alexia [R48.0], Reason for Study: ^Reason: rule out posterior circ stroke History: alexia, agraphia Brain MRIThere is no evidence of acute ischemic or hemorrhagic lesion on the scan.On the gradient echo images, there are scattered susceptibility lesions bilateral hemispheres indicating either calcification or chronic hemorrhage.Patchy bihemispheric periventricular white matter FLAIR/T2 high signal intensity lesions are seen which indicate mild to moderate degree nonspecific small vessel ischemic disease.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 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 normal ICAs, MCAs and ACAs. Vertebrobasilar system appears to be normal. Left PCA is fetal origin.
1. No evidence of acute ischemic or hemorrhagic lesion.2. Non specific small vessel ischemic disease.3. Normal brain MRA. 