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In this study , neurocognitive outcomes and neuroradiologic evidence of leukoencephalopathy were compared in children treated with intense central nervous system ( CNS ) - directed therapy ( P9605 ) versus those receiving fewer CNS - directed treatment days during intensive consolidation ( P9201 ) .
 Disease: leukoencephalopathy
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: leukoencephalopathy