AL Amyloidosis Associated with IgM Monoclonal Protein: A Distinct Clinical Entity

IgM-associated AL amyloidosis is rare and may represent a distinct entity. Sixty (7%) of 868 consecutive AL patients referred to our center had an IgM monoclonal protein. They were significantly older than non-IgM patients (median, 67 years vs. 62 years), had a higher frequency of lymph-node involve...

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