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  • Title: [Fine needle aspirate of lymph node as the analytical sample for immunophenotyping].
    Author: Svencbir V, Anić V, Siftar Z, Paro MM, Kolonić SO, Bolanca IK, Kardum-Skelin I.
    Journal: Acta Med Croatica; 2011 Sep; 65 Suppl 1():81-8. PubMed ID: 23126034.
    Abstract:
    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. The study was based on medical documentation, cytologic smears of FNA lymph node samples and results of flow cytometry immunophenotyping. A total of 239 patients were included over a one-year period. Patients were classified according to cytologic findings in the groups of non-Hodgkin's lymphoma of B cell origin (55%), benign lymphoproliferative disease (22%), undefined group of monomorphic population of lymphatic cells (16%), and the rest in the group of non-Hodgkin's non B cell origin. Study results showed FNA to be an appropriate method for obtaining sufficient numbers of cells for analysis by flow cytometry because there was no inadequate samples in our study group. In some cases of monomorphic lymphoid cell population, cytologic diagnosis was limited to small cell lymphomas, so determining the clonality by flow cytometry is crucial in separating malignant from benign lymphoproliferative disease. It is concluded that FNA associated with the flow cytometry method is a simple and safe method in the diagnosis of lymphoproliferative disease.
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