immunoglobulin heavy chain amyloidosis

An amyloidosis that is characterized by the aggregation and deposition of amyloid fibrils composed of monoclonal immunoglobulin heavy-chain fragments, usually produced by a plasma cell neoplasm.

Also known as: AH amyloidosis; Amyloidosis derived from immunoglobulin heavy chain; Heavy chain amyloidosis; Ig heavy-chain–associated amyloidosis