IgE myeloma: a case presentation and a review of the literature.

In the literature, fewer than 40 cases of IgE myeloma have been described. We report the first Norwegian case, an 80-year-old man presenting with progressive weakness, dyspnea and dizziness. With the exception of hypersedimentation, routine chemistry values were within reference limits. Plasma cells were not observed in the peripheral blood. Serum protein electrophoresis showed a monoclonal protein in the gammaglobulin fraction. Immunofixation confirmed the presence of an IgE kappa monoclonal protein. A bone marrow biopsy revealed an interstitial and nodular infiltration of abnormal plasma cells comprising 40% of nucleated cells present. Skeletal roentgenograms of this patient showed osteolytic lesions in the skull and in the left pubic arc. The findings for this patient were compared with the previous reports of IgE myeloma.