We described a 38-year-old woman of rapidly progressive dementia with white matter encephalopathy and death. She had Addison's disease but the adrenal glands were hyperplastic. Brain magnetic resonance imaging revealed diffuse white matter lesion predominantly in the frontal lobe with band-like contrast enhancement. l-Methyl-11C-methionine positron emission tomography revealed accumulation of tracer in bilateral frontal lobes. Stereotactic biopsy demonstrated demyelination changes. A number of urinary organic acids were elevated. Adrenoleukodystrophy was diagnosed by elevated plasma very long chain fatty acid and ABCD1 gene mutation (C1544C/T). Adrenoleukodystrophy should be considered as a differential diagnosis in women with rapidly progressive white matter encephalopathy.
Keywords: Addison's disease; Adrenoleukodystrophy; Dementia; Female carrier.
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