Martinez-Lopez A, Montes-Moreno S, Ramos R, Afonso-Martin JL, Mazorra F, Gonzalez de Villambrosia S, Batlle A, Grogan TM, Piris MA. Childhood florid follicular hyperplasia with immunoglobulin light-chain restriction in the gastrointestinal tract.
Histopathology 2014;
65:805-13. [PMID:
25131212 DOI:
10.1111/his.12511]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 07/16/2014] [Indexed: 12/22/2022]
Abstract
AIMS
Immunoglobulin light-chain expression is used routinely as an indirect marker of clonality for recognizing B cell lymphoproliferative disorders.
METHODS AND RESULTS
Here we describe four floral follicular hyperplasia cases in the gastrointestinal tract (appendix and rectum) of children (4 to 6 years). Immunohistochemical studies revealed lambda light-chain restriction that was associated with polyclonal IgH pattern. Clinical features and follow-up of the patients did not reveal any other systemic symptoms, laboratory abnormalities or organ alterations.
CONCLUSIONS
Recognition of this phenomenon is useful in the diagnosis of nodular lymphoid hyperplasia of the gastrointestinal tract, for avoiding overdiagnosis of lymphoid malignancies, and raises concerns that the identification of light-chain restriction is not necessarily a marker of monoclonality.
Collapse