title: Non-Hodgkin's lymphoma, multilobated B-cell type: report of nine cases with immunohistochemical and immunoultrastructural evidence for a follicular center cell derivation.
abstract: The clinical, pathologic, and immunologic features in nine cases of non-Hodgkin's lymphoma of the multilobated B-cell type are described. Clinical and phenotypic heterogeneity was observed in these B-cell neoplasms. A probable follicular center cell derivation for these cytologically unusual B-cell lymphomas is supported by antecedent histories of follicular center cell neoplasms in three cases; a focal nodular pattern in one case; the demonstration of peanut lectin (PNA) receptors, a marker for follicular center cells, on neoplastic multilobated B cells; and immunoultrastructural studies of nonneoplastic tonsillar cells that identified and characterized rare multilobated cells, immunoreactive for B1, B2, and Ia membrane antigens, a phenotype consistent with follicular center-type cells. Comparison of B- and T-cell multilobated lymphomas revealed that only immunologic studies accurately discriminated between these neoplasms.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000951:Antigens, Neoplasm / Q000032:analysis; D000954:Antigens, Surface / Q000032:analysis; D001402:B-Lymphocytes; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D007120:Immunochemistry; D008223:Lymphoma / Q000145:classification / Q000378:metabolism / Q000473:pathology* / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D011975:Receptors, Mitogen / Q000032:analysis
chemical_list: D000951:Antigens, Neoplasm; D000954:Antigens, Surface; D011975:Receptors, Mitogen; C038223:peanut agglutinin receptor