Leukoencephalopathy (leukodystrophy-like diseases) is a term that describes all of the brain white matter diseases, whether their molecular cause is known or unknown. It can refer specifically to any of these diseases: Progressive multifocal leukoencephalopathy Toxic leukoencephalopathy Leukoencephalopathy with brainstem and spinal cord involvement and lactate elevation Leukoencephalopathy with vanishing white matter Leukoencephalopathy with neuroaxonal spheroids Reversible posterior leukoencephalopathy syndrome Megalencephalic leukoencephalopathy with subcortical cysts...