BACKGROUND: Multiparameter flow cytometry is a useful tool for the diagnostic evaluation of mature B-cell neoplasms (MBN). Recently, it has been shown that CD200 may improve the distinction between chronic lymphocytic leukemia (CLL; CD200+) and mantle cell lymphoma (MCL; CD200-), but the role of CD200 expression in atypical CLL and other MBN remains to be established. METHODS: To address this issue, we investigated the expression of CD200 in 159 consecutive cases of MBN. RESULTS: CD200 was strongly expressed in CLL and was revealed to be an excellent marker to distinguish CLL from MCL, even in cases of atypical CLL. However, lack of CD200 was not an exclusive finding of MCL, being also observed in other MBNs. Furthermore, CD200 was highly expressed in hairy cell leukemia, being useful in the differential diagnosis of lymphomas with villous lymphocytes. Herein, we propose an algorithm to classify CD5+ MBNs based on the expression of CD200, CD11c, heavy chain immunoglobulins, and Matutes score. CONCLUSIONS: These results expand the understanding of the CD200 expression in MBNs, giving further support for the inclusion of this marker in the routine investigation by flow cytometry.
BACKGROUND: Multiparameter flow cytometry is a useful tool for the diagnostic evaluation of mature B-cell neoplasms (MBN). Recently, it has been shown that CD200 may improve the distinction between chronic lymphocytic leukemia (CLL; CD200+) and mantle cell lymphoma (MCL; CD200-), but the role of CD200 expression in atypical CLL and other MBN remains to be established. METHODS: To address this issue, we investigated the expression of CD200 in 159 consecutive cases of MBN. RESULTS:CD200 was strongly expressed in CLL and was revealed to be an excellent marker to distinguish CLL from MCL, even in cases of atypical CLL. However, lack of CD200 was not an exclusive finding of MCL, being also observed in other MBNs. Furthermore, CD200 was highly expressed in hairy cell leukemia, being useful in the differential diagnosis of lymphomas with villous lymphocytes. Herein, we propose an algorithm to classify CD5+ MBNs based on the expression of CD200, CD11c, heavy chain immunoglobulins, and Matutes score. CONCLUSIONS: These results expand the understanding of the CD200 expression in MBNs, giving further support for the inclusion of this marker in the routine investigation by flow cytometry.
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Authors: Dalia A Salem; Drake Scott; Catharine S McCoy; David J Liewehr; David J Venzon; Evgeny Arons; Robert J Kreitman; Maryalice Stetler-Stevenson; Constance M Yuan Journal: Cytometry B Clin Cytom Date: 2019-05-11 Impact factor: 3.058
Authors: Zhihong Hu; Yi Sun; Ellen J Schlette; Guilin Tang; Shaoying Li; Jie Xu; C Cameron Yin; Ken H Young; Keyur Pravinchandra Patel; Roberto N Miranda; Maitrayee Goswami; Michael Wang; Jeffrey L Jorgensen; L Jeffrey Medeiros; Sa A Wang Journal: Mod Pathol Date: 2017-10-06 Impact factor: 7.842
Authors: Yi Miao; Lei Fan; Yu-Jie Wu; Yi Xia; Chun Qiao; Yan Wang; Li Wang; Min Hong; Hua-Yuan Zhu; Wei Xu; Jian-Yong Li Journal: Oncotarget Date: 2016-03-22