[B lymphoproliferative syndrome with characteristics common to chronic lymphatic leukemia, Waldenström disease and plasmacytic leukemia].

A case of lymphoproliferative disorder presenting some features of chronic lymphocytic leukemia, Waldenström's disease and plasmacell leukemia without the full diagnostic criteria of any of these diseases is reported. It clearly demonstrates the affinity existing among the various neoplasms of the B-lymphocyte cell line.