Monoclonal gammopathy of IgA and IgE type in a case of chronic lymphatic leukaemia.

A 70-year-old woman was hospitalized with chronic lymphatic leukaemia. In the blood drawn during the first period of hospitalization, a monoclonal IgA was detected. At the second hospitalization, 4 months later a monoclonal IgE was found whereas the IgA paraprotein was no longer detectable. Both monoclonal immunoglobulins were of the chi-light-chain type. Rapid deterioration and death prevented further investigation.