[Immunophenotyping of B lymphoma in bone marrow biopsies. Contribution of 4 monoclonal antibodies used on paraffin-embedded tissues:DDB.42,DNA.7,DNA.44 and DND.53].
An immunohistochemical study was performed on 132 routinely processed trephine biopsies of the bone marrow (40 reactive lymphocytosis, 80 B-cell lymphomas, 7 T-cell lymphomas, 5 Hodgkin's diseases), using 4 monoclonal antibodies, DBB.42, DNA.7, DBA.44, DND.53, which are directed against B-lymphocyte associated antigens, not destroyed by fixation. DBB.42, DNA.7 and DBA.44 are formalin and Bouin resistant. They do not stain myeloid, erythroblastic, histiomonocytic and endothelial cells, and are particularly suitable for bone marrow biopsies. DBB.42 and DNA.7 in association, identify all B-cell lymphomas and no T-cell lymphoma. DBB.42 recognizes respectively 65/65 and 13/15 low and high grade malignancy B-cell lymphomas, and DNA.7, 54/65 and 15/15. In our hands, these 2 antibodies are more reliable than L26 and MB2 on bone marrow biopsies. DBA.44 identifies 15/15 hairy-cell leukemias, and interestingly stains only 10% of other B-cell lymphomas, and no T-cell lymphoma. DND.53 is less specific, but reveals Reed-Sternberg cells. Combined immunostaining with anti T-lymphocyte antibody CD3, let us appreciate the contribution and the limits of immunohistochemistry in the diagnosis of bone marrow lymphoproliferative diseases, especially for interstitial and nodular lymphoid infiltrates of undetermined significance. These results point out the value of these 4 monoclonal antibodies in routinely processed bone marrow biopsies, particularly of DBB.42 and DBA.44.
Meuge-Moraw
C
C
Institut Universitaire de Pathologie, Lausanne, Suisse.
Bernard
M C
MC
Delacretaz
F
F
D000911:Antibodies, Monoclonal; D001853:Bone Marrow / Q000276:immunology / Q000473:pathology*; D006801:Humans; D016130:Immunophenotyping; D007943:Leukemia, Hairy Cell / Q000276:immunology / Q000473:pathology; D016393:Lymphoma, B-Cell / Q000276:immunology* / Q000473:pathology; D016399:Lymphoma, T-Cell / Q000276:immunology / Q000473:pathology
D000911:Antibodies, Monoclonal