Asymptomatic human immunodeficiency virus (hiv) infection status [Z21] / Polyneuropathy in diseases classified elsewhere [G63], Reason for Study: ^Reason: rule out intracranial structural abnormalities History: headache in HIV patient No evidence of acute ischemic or hemorrhagic lesion. No evidence of abnormal enhancement.Subtle patchy ill defined fairly symmetric bilateral periventricular white matter high signal intensity lesions are seen on T2/FLAIR images. These are non specific findings. There is no associated cortical atrophy. 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, or abnormal contrast enhancement. 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. Patchy subtle ill defined symmetric T2/FLAIR high signal intensity lesions on bilateral periventricular white matter are seen which are non specific. Differential diagnosis include minimal representation of HIV encephalitis which needs clinical correlation and non specific small vessel ischemic disease.2. No evidence of acute ischemic or hemorrhagic lesion.3. No abnormal enhancement. 