History of AML with possible CNS involvement now with worsening left temporal hemianopsia and headaches. Rule out leptomeningeal disease. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is encephalomalacia in the right occipital lobe with involvement of the visual cortex, predominantly gyriform areas of susceptibility effect, and ex vacuo dilatation of the right occipital horn. There is also mild encephalomalacia in the left occipital lobe. There are also a few scattered foci of susceptibility effect within the cerebral hemispheres and left cerebellar hemisphere, which are nonspecific, but may represent chronic microhemorrhages. There is no evidence of abnormal intracranial enhancement or acute infarction. There is no midline shift or herniation. The orbits, skull, and scalp soft tissues are unremarkable.
Bilateral occipital lobe encephalomalacia, right greater than left, but no evidence of intracranial mass or leptomeningeal disease.