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  • Title: Mouse rosettes and surface immunoglobulin in small lymphocytic lymphoma. Importance in immunophenotyping and differential diagnosis.
    Author: Batata A, Shen B.
    Journal: Cancer; 1992 Feb 15; 69(4):1021-30. PubMed ID: 1735069.
    Abstract:
    Cell suspensions from lymphoid tissue of 82 small lymphocytic lymphoma (SLL), 8 intermediate lymphocytic lymphoma (ILL), 286 other B-non-Hodgkin's lymphoma (B-NHL), and 248 reactive lymphadenopathy (RLA) cases were analyzed to evaluate the diagnostic significance of mouse-rosette (M-rosette) assay, and surface immunoglobulin clonality (SIg) and level of expression. In SLL, 55 were M-rosette positive (67.07%) and 72 SIg positive (87.8%), with weak fluorescence in 63 and strong fluorescence in 9 cases. Of 10 SIg-negative cases, 9 were M-rosette positive; of 27 M-rosette-negative cases, 26 were SIg positive. Seven of the nine cases with strong fluorescence were M-rosette positive. In other B-NHL, 252 were M-rosette negative (88.11%) and 245 SIg positive (85.66%), with strong fluorescence in 211 and weak fluorescence in 34 cases. Thirty-two of the 34 cases with weak fluorescence were M-rosette negative. Of the RLA cases, 213 were M-rosette negative (85.89%) and 1 SIg positive (0.4%). The study demonstrated the independent expression of M-rosettes and SIg in SLL and their complementary role in diagnosis. It showed that positive results for M-rosettes and weak fluorescence are characteristic of SLL, that M-rosette negativity and strong fluorescence are characteristic of other B-NHL, and that M-rosette negativity and polyclonal SIg are characteristic of RLA. In 26 cases with paired data for CD5, M-rosettes, and SIg, a positive result for M-rosettes was superior to CD5 in differentiating SLL from other B-NHL. Intermediate lymphocytic lymphoma frequently showed weak SIg fluorescence and M-rosette negativity.
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