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We report a 25-year-old patient with a progressive asymmetric peripheral neuropathy of the distal lower limbs.Imaging studies showed enlargement of lumbosacral roots,plexus,and proximal sciatic nerve.Sacral plexus biopsy revealed amyloidosis associated with endoneurial edema. Immunohistochemistry with anti-prealbumin,serum amyloid A,and immunoglobulin light chain antisera failed to label the amyloid. |
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