right lower extremity weakness and numbness There is linear diffusion restriction lesion on the left lower pons without evidence of susceptibility artifacts indicating acute ischemic infarction without hemorrhagic transformation.Previously seen diffuse patchy high signal intensities on pons on FLAIR images are not shown on today's scan indicating resolution of possible central pontine myelinolysis.Scattered high signal intensities on bilateral periventricular white matters on FLAIR images indicate non specific 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. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Acute ischemic infarction without hemorrhagic transformation on the lower pons, left side.2. Resolution of possible findings of central pontine myelinolysis since prior exam.3. No change of non specific small vessel disease.