Concomitant lymphoplasmacytic lymphoma, multiple myeloma, and amyloidosis: A diagnostic and therapeutic challenge.

We report a case based on simultaneous occurrence of Waldenström macroglobulinemia, myeloma and amyloidosis as a collision neoplasm. The strangeness and severity of the case presented a diagnostic and therapeutic challenge, which required individualised treatment and close follow-up to achieved stringent complete response.