Epidemiologic Study of Persistent Polyclonal B-cell Lymphocytosis (PPBL) - Observatory 1990-2012
Epidemiologic Study of Persistent Polyclonal B-cell Lymphocytosis (PPBL) - Observatory 1990-2012
The main purpose of this study is the description of all French cases of PPBL and the establishment of minimal criteria for the pathology diagnosis and its follow-up.
The secondary objective is the immunologic and genetic characterization of lymphoid cells causing the disease.
Inclusion Criteria:
Exclusion Criteria: