Analysis of Immunophenotypic Criteria by Flow Cytometry to Define B-Cell Chronic Lymphoproliferative Diseases
DOI:
https://doi.org/10.32635/2176-9745.RBC.2023v69n1.2734Keywords:
lymphoproliferative disorders/diagnosis, immunophenotyping, flow cytometryAbstract
Introduction: Flow cytometry is an important methodology for the diagnosis of chronic B-cell lymphoproliferative diseases (CBCLPD), however, sometimes the cytometrist does not find sufficient elements for the exact definition of the pathological entity involved. Objective: To analyze the reports issued to patients with chronic lymphoproliferative diseases (CLPD) tested at a private laboratory in Belém-PA, according to the classification criteria established by the studies by Matutes et al. and Craig and Foon. Method: Retrospective study with reports of patients who underwent immunophenotyping by flow cytometry for the diagnosis of CBCLPD from September 2015 to December 2019. Results: After applying the criteria by Matutes et al. and Craig and Foon to the reports analyzed, agreement was reached for 45.24% of the cases of chronic b-cell lymphocytic leukemia/small B-cell lymphocytic lymphoma, 14.29% of the cases of follicular lymphoma, 4.76% of the cases of hairy cell leukemia and 21.43% of the cases defined as “other CBCLPDs not classifiable by flow cytometry”. However, Hotelling’s hypothesis test (p=0.0409) showed a statistical difference for the definition of CBCLPD according to the criteria adopted. Conclusion: The results emphasize that even though flow cytometry is important for the characterization of CBCLPD, sometimes the cytometrist needs to include the category “other chronic B-cell lymphoproliferative diseases not classified by flow cytometry” in the report to induce the prescriber to request additional complementary exams.
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