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Diffusion weighted imaging ( DWI ) of all patients revealed well demarcated hyperintense lesions within the subcortical white matter of the cerebral hemispheres and the corpus callosum , corresponding to areas of decreased proton diffusion on apparent diffusion coefficient ( ADC ) maps ( available in 21 / 27 patients ) .
 Disease: lesions within the subcortical white matter
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: lesions within the subcortical white matter