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A single primer pair immunoglobulin polymerase chain reaction assay as a useful tool in fine‐needle aspiration biopsy differential diagnosis of lymphoid malignancies
Author(s) -
Maroto Alicia,
Luis RodríguezPeralto Jose,
Angel Martinez Miguel,
Martinez Manuel,
De Agustin Pedro
Publication year - 2003
Publication title -
cancer cytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.052
H-Index - 304
eISSN - 1097-0142
pISSN - 0008-543X
DOI - 10.1002/cncr.11060
Subject(s) - primer (cosmetics) , polymerase chain reaction , fine needle aspiration , biopsy , pathology , immunoglobulin heavy chain , lymphoma , medicine , cytology , cytopathology , gene rearrangement , biology , antibody , immunology , gene , biochemistry , chemistry , organic chemistry
BACKGROUND Different polymerase chain reaction (PCR) assays have proved to be useful tools for the detection of clonal immunoglobulin heavy chain (IgH) gene rearrangements in frozen or paraffin‐embedded tissues. However, the usefulness of a single primer pair PCR assay on fine‐needle biopsy aspirates has not been proven yet. METHODS The authors conducted a wide prospective study of 148 lymph nodes and extranodal lymphoid infiltrates obtained by fine‐needle aspiration biopsy (FNAB). The power of a single primer pair PCR amplification of the hypervariable CDRIII region IgH genes was evaluated using a pair of consensus primers. The PCR cytologic results were compared with the final clinicopathologic diagnosis of each case assessed by combining cytologic and/or immunophenotypic data and histologic features or clinical follow‐up. RESULTS Among the 139 cases with an evaluable PCR result, 35 of 40 (87%) B‐cell non‐Hodgkin lymphomas were detected as a monoclonal band. Monoclonal IgH bands also were detected in two of the five (40%) T‐cell lymphomas, two of the seven (29%) Hodgkin lymphomas, and 5 of the 87 (6%) reactive lymphoid disorders. These results are similar to those obtained by other authors using seminested PCR or combining different PCR tests in each sample obtained by FNAB or excisional biopsy. CONCLUSIONS The results of the current study demonstrate the convenience of a single primer pair PCR amplification over seminested methods in terms of lower cost and workload. The existence of PCR false‐negative and false‐positive results for lymphoma makes it necessary to combine the information obtained by PCR with cytologic and/or immunophenotypic data to optimize the number of lymphoid malignancies correctly diagnosed by FNAB. Cancer (Cancer Cytopathol) 2003;99:180–5. © 2003 American Cancer Society.