[Fine needle aspirate of lymph node as the analytical sample for immunophenotyping].

In modern clinical laboratory routine, cell analysis by flow cytometry means help in setting up the diagnosis by determination of B-lymphocyte clonality and thus separation of benign and malignant lymphoproliferative diseases. The aim of this study was to assess the value of cytologic diagnosis and adequacy of the material obtained by fine needle aspiration (FNA) of lymph nodes for flow cytometry analysis in cases of benign lesions and primary malignant lesions of lymph nodes. In addition, the aim was to determine B-lymphocyte clonality in different groups of benign and malignant lymph node lesions.