Peripheral nerve involvement in primary systemic AL amyloidosis: a clinical and electrophysiological study

Peripheral nerves in primary systemic AL amyloidosis patients seem to be involved more extensively than clinical manifestations might suggest. The clinical picture of polyneuropathy in this disease closely resembles that in transthyretin-type familial amyloid polyneuropathy patients with a late age at onset, particularly those originating from sporadic kindreds.