Abstract: | Among 55 amyloidoses, the detection of a monoclonal protein (MP) led to the selection of 15 primary and 3 myeloma-associated types of amyloidosis. Therefore the presence of a MP gives evidence for an immunocytic amyloidosis. The lambda-light-chain nature of MP and the abundant production of free light-chains are two of the factors predisposing to the production of amyloid deposits (AL) in the course of immunocyte dyscrasias. |