Light Chain Amyloidosis due to Waldenström’s Macroglobulinemia Showing
A 67-year-old Japanese man was referred to us with numerous papules and
nodules. Examination revealed i) IgM-monoclonal proteinemia, ii) amyloid
protein deposition around vessels in the dermis and subcutis, and iii)
lymphoplasma cells into bone marrow. This report shows that
Waldenström’s macroglobulinemia causes papules/nodules through the
development of amyloidosis.