[IgM Myeloma: case report and literature review]. / Myélome à IgM : à propos d'un cas et revue de littérature.

The presence of serum monoclonal IgM is often associated with the diagnosis of Waldenström macroglobulinemia (WM) or other chronic lymphoproliferative disorders. IgM myeloma is a rare entity (0.5%). We report the case of an IgM myeloma complicated by systemic amyloidosis AL, with an impure nephrotic syndrome and a factor FX deficiency.