title: CD56-positive large B-cell lymphoma.
abstract: CD56 (NCAM), a neural adhesion molecule, is normally expressed on natural killer cells and subsets of T cells and is commonly seen on hematolymphoid neoplasms such as plasma cell myeloma and acute myelogenous leukemia. It is uncommon in B-cell lymphoma. From 2001 to 2003 a cohort of 20 cases of CD56 B-cell lymphomas was identified by flow cytometry (<0.5% of all B-cell lymphomas studied) during a 2-year period. Most (90%) expressed CD10 and 5/5 tested cases were BCL6, suggesting a follicular origin. An extranodal disease presentation was seen in 45% and may be related to CD56 expression. These CD56 B-cell lymphomas may represent a new subset of large B-cell lymphoma. The relationship of cells with this antigenic profile to normal B-cell differentiation is explored.
authors.affiliation: Bio-REFERENCE Laboratories, Inc, Elmwood Park, NJ 07407, USA. jweisberger@bioreference.com
authors.forename: James
authors.initials: J
authors.lastname: Weisberger
authors.forename: Wojciech
authors.initials: W
authors.lastname: Gorczyca
authors.forename: Marsha C
authors.initials: MC
authors.lastname: Kinney
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019002:CD56 Antigen / Q000378:metabolism*; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007150:Immunohistochemistry; D016130:Immunophenotyping; D016393:Lymphoma, B-Cell / Q000276:immunology / Q000378:metabolism / Q000473:pathology*; D008297:Male; D008875:Middle Aged
chemical_list: D019002:CD56 Antigen