title: Sézary syndrome: phenotypic and functional characterization of the neoplastic cells.
abstract: Phenotypic properties of the neoplastic cells in skin, blood and lymph node specimens from 5 patients with the Sézary syndrome were examined by immuno-enzymatic and -fluorescence labelling of cells and tissue sections with a monoclonal antibody panel. In 3 cases, the in vitro functional properties of the neoplastic cells (isolated from blood specimens) were also analysed using a reverse plaque-forming cell assay. 3 different immunological categories were identified as follows: T-helper/inducer neoplasms (3 patients); T-suppressor/cytotoxic neoplasms (1 patient); and neoplastic T-cells demonstrating characteristics consistent with a concept of their derivation from inducible suppressor T-cells (1 patient). These data provide conclusive evidence that Sézary syndrome is heterogeneous with respect to the immunological characteristics of the neoplastic cells.
mesh_terms: D000368:Aged; D000911:Antibodies, Monoclonal; D005260:Female; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis; D008198:Lymph Nodes / Q000473:pathology*; D008223:Lymphoma / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D012751:Sezary Syndrome / Q000097:blood / Q000276:immunology / Q000473:pathology*; D012867:Skin / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D007136:Immunoglobulins