Improved detection of diffuse large B-cell lymphoma by flow cytometric immunophenotyping-Effect of tissue disaggregation method

Cytometry. Part B, Clinical Cytometry
Bethany D VallangeonAnand S Lagoo

Abstract

Flow cytometric immunophenotyping (FCI) is recognized as a rapid, sensitive, and accurate method for diagnosis of B-cell lymphomas. We observed that FCI failed to identify the clonal B-cell population in several cases of large B-cell lymphoma (DLBCL) when tissue samples were prepared by a commercially available mechanical tissue disaggregation method. We tested a manual tissue disaggregation method and compared it with the mechanical method. FCI findings from 51 cases of DLBCL processed with the mechanical tissue disaggregation method, 27 cases processed using the manual method, and 15 cases processed using a combination of both methods were compared. The histological and immunohistochemical findings in each case were reviewed. FCI detected a clonal B-cell population in 88.9% of cases processed by the manual tissue disaggregation method, 66.7% of cases processed by a combination of the manual and mechanical disaggregation methods, and in 62.7% of cases processed solely by the mechanical tissue disaggregation method (P < 0.01 Fisher exact). Manual processing yielded positive FCI results in 81.8% of the nodal tissue samples and 93.8% of the extra-nodal tissue samples, whereas mechanical disaggregation was particularly inefficient...Continue Reading

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Citations

Sep 18, 2016·Cytometry. Part B, Clinical Cytometry·J P McCoy
Jan 6, 2017·Archives of Pathology & Laboratory Medicine·Shiyong LiKaren P Mann
Jul 22, 2017·Cytometry. Part B, Clinical Cytometry·Sindhu Cherian, Jonathan R Fromm
Aug 23, 2017·Nature Biotechnology·Wenzhao MengEline T Luning Prak
Aug 29, 2016·Journal of Experimental & Clinical Cancer Research : CR·Iole CordoneCarmine M Carapella
Aug 16, 2018·Singapore Medical Journal·Muhammad Bilal AbidSanjay de Mel
Dec 15, 2018·Cytometry. Part B, Clinical Cytometry·Adam C SeegmillerFiona E Craig
Oct 29, 2021·Journal of Clinical and Experimental Hematopathology : JCEH·Yosuke NakayaTakahisa Yamane

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