[Case of light-chain plasmacytic leukemia].

A female patient aged 60, is described, with plasmacellular leukemia, with disturbance in the light chains of immunoglobulins--light chain plasmacellular leukemia. The clinical picture combines the signs of blast leucosis with those of the light chain disease. The disease had an acute course, failing to respond to the treatment, with a lethal end, about 40 days after the manifestation of the clinical symptoms, better resembling blast leucosis than myeloma.