title: Cytoplasmic immunoglobulins in giant lymph node hyperplasia (Castleman's tumour).
abstract: The immunohistologic features were studied in 6 cases of giant lymph node hyperplasia (GLNH) and the cytoplasmic immunoglobulin (CIg) characteristics were compared with those of follicular lymphoma and non-specific follicular lymph node hyperplasia. By use of the peroxidase - antiperoxidase (PAP) technique it was shown that GLNH comprised a mosaic, polyclonal population of CIG-producing cells, the CIg pattern being comparable with that observed in follicular lymphadenitis. In contrast, follicular lymphomas disclosed a definite monoclonal pattern, the cytoplasmic Ig containing only one light chain of kappa type. This led to the conclusion that GLNH is not a neoplastic change, but has the characteristics of a reactive process within the B-cell compartment.
mesh_terms: D001402:B-Lymphocytes; D006801:Humans; D006965:Hyperplasia; D007070:Immunoglobulin A / Q000032:analysis; D007072:Immunoglobulin D / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis*; D008198:Lymph Nodes / Q000473:pathology; D008199:Lymphadenitis / Q000276:immunology; D008206:Lymphatic Diseases / Q000276:immunology*
chemical_list: D007070:Immunoglobulin A; D007072:Immunoglobulin D; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins