Cerebral infarction, unspecified [I63.9], Reason for Study: ^Reason: Assess for stroke History: L face/arm/leg weakness, gaze deviation to L There is a focal restricted diffusion at mid Pons especially on the right side without evidence of hemorrhagic transformation indicating mid basilar pleural prior type of ischemic infarct.Underlying brain shows scattered minimal FLAIR/T2 high signal intensity lesions on periventricular white matter indicating nonspecific small vessel ischemic disease.The ventricles, sulci and cisterns are 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 mastoid air cells are clear.There is a small retention cyst in the right side sphenoid sinus.There is about 14.8 mm x 16.3 mm sized Thornwaldt cyst.
1. Acute ischemic infarct at mid Pons especially on the right side from the midline likely represent basilar artery perforator territory. No hemorrhagic transformation.2. Non specific small vessel ischemic disease.