Discrepancies between CSF biomarker and PET determinations of elevated brain amyloid and their prognostic significance

Discrepant abnormal cerebrospinal fluid (CSF) and positron emission tomography (PET) brain amyloid indicators are uncommon in mild cognitive impairment (MCI). CSF-PET discrepant persons with MCI tend to have less abnormal values initially. CSF-PET discrepant persons with MCI have a benign prognosis at 4 years.