Multiple sclerosis and amyloid deposits in the white matter of the brain

We present the neuropathological findings in a female patient with clinically definite multiple sclerosis (MS), who at autopsy had multifocal amyloid deposits in the white matter of the brain without other signs of amyloidosis. The patient had relapsing/remitting MS between the ages of 26 and 45, and during her last 14 years she had a secondary chronic progressive form of MS. Previous reports of amyloid deposits in MS are reviewed and the possible relationship between amyloid deposits and the increased production of immunoglobulin free light chains in MS is discussed.