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Fitzpatrick MJ, Sundaram V, Ly A, Abramson JS, Balassanian R, Cheung MC, Cook SL, Falchi L, Frank AK, Gupta S, Hasserjian RP, Lin O, Long SR, Menke JR, Mou E, Reed DR, Ruiz-Cordero R, Volaric AK, Wang L, Wen KW, Xie Y, Zadeh SL, Gratzinger D. Small volume biopsy diagnostic yield at initial diagnosis versus recurrence/transformation of follicular lymphoma: A retrospective Cyto-Heme Interinstitutional Collaborative study. Cancer Cytopathol 2023; 131:279-288. [PMID: 36573933 PMCID: PMC10557381 DOI: 10.1002/cncy.22676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 09/28/2022] [Accepted: 11/01/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND Few studies have evaluated diagnostic yield of small volume biopsies (SVB) for the diagnosis and management of follicular lymphoma (FL). METHODS The authors performed a multi-institutional retrospective analysis of SVBs including fine-needle aspiration (FNA) and needle core biopsy (NCB) for initial FL diagnosis and suspected recurrence or transformation of FL. A total of 676 workups beginning with SVB were assessed for the mean number of biopsies per workup, the proportion of workups requiring multiple biopsies, and the proportion with a complete diagnosis including grade, on initial biopsy. RESULTS Compared to workups performed for question transformation/recurrence, those done for initial FL diagnosis were significantly more likely to require multiple biopsies (p < .01), had a higher mean number of biopsies per workup (1.7 vs. 1.1, absolute standardized difference = 1.1), and a lower complete diagnosis rate at initial biopsy (39% vs. 56%). At initial FL diagnosis, NCB +/- FNA was associated with fewer biopsies per workup compared to FNA +/- CB (1.2 vs. 1.9), fewer workups requiring multiple biopsies (23% vs. 83%), and a higher complete diagnosis rate (71% vs. 18%). In contrast, during assessment for transformation/recurrence, NCB and FNA showed a similar mean number of biopsies per workup (1.2 vs. 1.2) and few workups required multiple biopsies (6% vs. 19%). CONCLUSIONS SVB at initial FL diagnosis often required additional biopsies to establish a complete diagnosis. In contrast, when assessing for transformed/recurrent FL, additional biopsies were generally not obtained regardless of SVB type, suggesting that in these clinical settings SVB may be sufficient for clinical decision-making.
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Affiliation(s)
- Megan J Fitzpatrick
- Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Vandana Sundaram
- Quantitative Sciences Unit, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Amy Ly
- Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Jeremy S Abramson
- Department of Hematology/Oncology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Ronald Balassanian
- Department of Pathology, University of California San Francisco Hospital, San Francisco, California, USA
| | - Matthew C Cheung
- Division of Hematology, Sunnybrook Odette Cancer Centre, University of Toronto, Toronto, Ontario, Canada
| | - Stephen L Cook
- Department of Laboratory Medicine, San Francisco Veterans Affairs Health Care System, San Francisco, California, USA
| | - Lorenzo Falchi
- Department of Hematology/Oncology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Annabel K Frank
- Department of Hematology/Oncology, University of California San Francisco Hospital, San Francisco, California, USA
| | - Srishti Gupta
- Department of Pathology, University of Virginia Medical Center, Charlottesville, Virginia, USA
| | - Robert P Hasserjian
- Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Oscar Lin
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Steven R Long
- Department of Pathology, University of California San Francisco Hospital, San Francisco, California, USA
| | - Joshua R Menke
- Department of Pathology, Stanford University Hospital, Stanford, California, USA
| | - Eric Mou
- Division of Hematology, Oncology, and Blood & Marrow Transplantation, The University of Iowa, Iowa City, Iowa, USA
| | - Daniel R Reed
- Section on Hematology/Oncology, Wake Forest Baptist Health Comprehensive Cancer Center, Winston-Salem, North Carolina, USA
| | - Roberto Ruiz-Cordero
- Department of Pathology, University of California San Francisco Hospital, San Francisco, California, USA
| | - Ashley K Volaric
- Department of Pathology, University of Virginia Medical Center, Charlottesville, Virginia, USA
- Department of Pathology, Stanford University Hospital, Stanford, California, USA
| | - Linlin Wang
- Department of Pathology, University of California San Francisco Hospital, San Francisco, California, USA
| | - Kwun Wah Wen
- Department of Pathology, University of California San Francisco Hospital, San Francisco, California, USA
| | - Yi Xie
- Department of Pathology, University of California San Francisco Hospital, San Francisco, California, USA
| | - Sara L Zadeh
- Department of Pathology, University of Virginia Medical Center, Charlottesville, Virginia, USA
| | - Dita Gratzinger
- Department of Pathology, Stanford University Hospital, Stanford, California, USA
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Sasaki Y, Kishimoto K, Homma M, Shiozawa E, Takimoto M, Yamochi-Onizuka T. Follicular tissue fragments in fine-needle aspiration cytology of lymph nodes: A useful clue in differential diagnosis of follicular lymphoma and reactive follicular hyperplasia. Diagn Cytopathol 2021; 49:842-849. [PMID: 33876862 DOI: 10.1002/dc.24753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 11/11/2022]
Abstract
BACKGROUND In Fine-needle aspiration cytology (FNAC) of lymph nodes, tissue fragments derived from follicular structures may be observed in specimens. We defined such tissue fragments as follicular tissue fragments (FTF), and investigated differences in cytological findings for FTFs of each histological type. METHOD A total of 41 cases with FNAC of lymph nodes were examined. In these cases, the histopathological diagnoses were reactive lymphoid hyperplasia (RLH) (n = 17), follicular lymphoma (FL) (n = 13), diffuse large B-cell lymphoma (DLBCL) (n = 18), and Burkitt lymphoma (n = 1). Specimens were analyzed for the presence of FTFs, and for tingible-body macrophages (TBMs) and monomorphism of lymphocytes in FTFs. FTFs with a maximum diameter of >500 μm were defined as large-FTFs. RESULTS FTFs were identified in RLH (14/17, 82.4%), FL (13/13, 100%), and DLBCL (3/18, 16.7%). In the RLH subtypes, FTFs were present only in follicular hyperplasia (FH) (14/15, 93.3%) and not in paracortical hyperplasia (0/2). The number of cases with large FTFs among those with FTFs were as follows: RLH (10/14, 71.4%), FL (11/13, 84.6%), and DLBCL (0/3). Similarly, those with TBMs in FTFs were as follows: RLH (13/14, 92.9%), FL (0/13) and DLBCL (2/3, 66.7%). Monomorphism was observed in RLH (1/14, 7.1%) and FL (11/13, 84.6%), but not in DLBCL (0/3). CONCLUSIONS Distinction between FL and FH is possible by identifying large-FTFs. In FL, TBMs are absent in FTFs and lymphocytes often show monomorphism. Therefore, recognizing FTFs and observing details inside the FTFs are useful for identification and differential diagnosis of FL and FH in FNAC of lymph nodes.
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Affiliation(s)
- Yosuke Sasaki
- Department of Pathology, Showa University School of Medicine, Tokyo, Japan
| | - Koji Kishimoto
- Hospital Pathology Division, Kyorin University Hospital, Tokyo, Japan
| | - Mayumi Homma
- Department of Pathology, Showa University School of Medicine, Tokyo, Japan
| | - Eisuke Shiozawa
- Department of Pathology, Showa University School of Medicine, Tokyo, Japan
| | - Masafumi Takimoto
- Department of Pathology, Showa University School of Medicine, Tokyo, Japan
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McNamara C, Montoto S, Eyre TA, Ardeshna K, Burton C, Illidge T, Linton K, Rule S, Townsend W, Wong WL, McKay P. The investigation and management of follicular lymphoma. Br J Haematol 2020; 191:363-381. [PMID: 32579717 DOI: 10.1111/bjh.16872] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | - Silvia Montoto
- St Bartholomew’s and The Royal London NHS Trust London UK
| | - Toby A. Eyre
- Department of Clinical Haematology Oxford University Hospitals NHS Foundation Trust Oxford UK
| | - Kirit Ardeshna
- Department of Haematology University College London Hospital LondonUK
| | - Cathy Burton
- Department of Haematology Leeds Cancer Centre Leeds UK
| | - Tim Illidge
- Institute of Cancer Sciences the Christie NHS Foundation Trust University of Manchester Manchester UK
| | - Kim Linton
- Department of Medical Oncology The Christie Hospital NHS Trust Manchester UK
| | - Simon Rule
- Department of Haematology University of Plymouth Medical School Plymouth UK
| | - William Townsend
- Department of Haematology University College London Hospital LondonUK
| | - Wai L. Wong
- Paul Strickland Scanner Centre Mount Vernon Hospital Northwood UK
| | - Pam McKay
- Department of Haematology Beatson West of Scotland Cancer Centre Glasgow Scotland UK
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Diagnosis of B-cell non-hodgkin lymphomas with small-/intermediate-sized cells in cytopathology. PATHOLOGY RESEARCH INTERNATIONAL 2012; 2012:164934. [PMID: 22693682 PMCID: PMC3368210 DOI: 10.1155/2012/164934] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Accepted: 03/15/2012] [Indexed: 11/17/2022]
Abstract
Fine needle sampling is a fast, safe, and potentially cost-effective method of obtaining tissue for cytomorphologic assessment aimed at both initial triage and, in some cases, complete diagnosis of patients that present clinically with lymphadenopathy. The cytologic diagnosis of B-cell non-Hodgkin lymphomas composed of small-/intermediate-sized cells, however, has been seen as an area of great difficulty even for experienced observers due to the morphologic overlap between lymphoma and reactive lymphadenopathies as well as between the lymphoma entities themselves. Although ancillary testing has improved diagnostic accuracy, the results from these tests must be interpreted within the morphological and clinical context to avoid misinterpretation. Importantly, the recognition of specific cytologic features is crucial in guiding the appropriate selection of ancillary tests which will either confirm or refute a tentative diagnosis. For these reasons, we here review the cytologic characteristics particular to five common B-cell non-Hodgkin lymphomas which typically cause the most diagnostic confusion based on cytological assessment alone: marginal zone lymphoma, follicular lymphoma, mantle cell lymphoma, chronic lymphocytic leukemia/small lymphocytic lymphoma, and lymphoplasmacytic lymphoma. We summarize the most pertinent cytomorphologic features for each entity as well as for reactive lymphoid hyperplasia, contrast them with each other to facilitate their recognition, and highlight common diagnostic pitfalls.
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McNamara C, Davies J, Dyer M, Hoskin P, Illidge T, Lyttelton M, Marcus R, Montoto S, Ramsay A, Wong WL, Ardeshna K. Guidelines on the investigation and management of follicular lymphoma. Br J Haematol 2011; 156:446-67. [PMID: 22211428 DOI: 10.1111/j.1365-2141.2011.08969.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Lymph nodes. Diagn Cytopathol 2010. [DOI: 10.1016/b978-0-7020-3154-0.00013-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kwak JY, Kim EK, Ko KH, Yang WI, Kim MJ, Son EJ, Oh KK, Kim KW. Primary thyroid lymphoma: role of ultrasound-guided needle biopsy. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2007; 26:1761-1765. [PMID: 18029928 DOI: 10.7863/jum.2007.26.12.1761] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
OBJECTIVE The purpose of this study was to describe the sonographic findings of primary thyroid lymphoma and evaluate the role of ultrasound-guided biopsy in diagnosing thyroid lymphoma. METHODS This study included 6 patients (age range, 56-72 years; mean, 62.5 years). We searched the database of our institution and retrospectively collected data on the thyroid lymphomas that were confirmed pathologically. All of the sonograms and medical records were reviewed retrospectively. RESULTS All 6 patients had an enlarged neck mass and underwent ultrasound-guided fine-needle aspiration biopsy. The most notable sonographic feature of primary thyroid lymphoma was a marked hypoechoic mass compared with the residual thyroid tissue. Among the 6 patients with a diagnosis of thyroid lymphoma, 3 (50%) had a diagnosis of lymphoma by ultrasound-guided fine-needle aspiration biopsy. Final pathologic results were obtained by ultrasound-guided core needle biopsy (3/6 patients [50%]) or thyroidectomy (3/6 [50%]). Most patients with thyroid lymphoma (5/6 [83.3%]) were found to have diffuse large B-cell lymphoma and were treated with chemotherapy with or without radiotherapy. In 1 patient with follicular lymphoma, diagnosis and treatment were accomplished by total thyroidectomy. CONCLUSIONS Our results show that ultrasound-guided core needle biopsy can be a safe and accurate method for diagnosing thyroid lymphoma and may be a suitable replacement for diagnostic thyroid surgery.
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Affiliation(s)
- Jin Young Kwak
- Department of Diagnostic Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, 250 Seongsanno, 134 Sinchondong, Seodaemungu, Seoul 120-752, Korea
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Dey P, Amir T, Al Jassar A, Al Shemmari S, Jogai S, Bhat M G, Al Quallaf A, Al Shammari Z. Combined applications of fine needle aspiration cytology and flow cytometric immunphenotyping for diagnosis and classification of non Hodgkin lymphoma. Cytojournal 2006; 3:24. [PMID: 17069647 PMCID: PMC1634871 DOI: 10.1186/1742-6413-3-24] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2006] [Accepted: 10/27/2006] [Indexed: 11/22/2022] Open
Abstract
Aims and objectives In this present study we have evaluated the feasibility of sub-classification of non-Hodgkin's lymphoma (NHL) cases according to World Health Organization's (WHO) classification on fine needle aspiration cytology (FNAC) material along with flow cytometric immunotyping (FCI) as an adjunct. Materials and methods In this five years study, only cases suggested or confirmed as NHL by FNAC were selected and FCI was performed with a complete panel of antibodies (CD3, CD2, CD 4, CD5, CD8, CD7, CD10, CD19, CD20, CD23, CD45, κ and λ) by dual color flow cytometry. Both cytologic findings and FCI data were interpreted together to diagnose and sub-classify NHL according to WHO classification. Wherever possible the diagnoses were compared with cytology. Results There were total 48 cases included in this study. The cases were classified on FNAC as predominant small cells (12), mixed small and large cells (5) and large cells (26). In five cases a suggestion of NHL was offered on FNAC material and these cases were labeled as NHL not otherwise specified (NHL-NOS). Flow cytometry could be performed in 45 cases (93.8%) and in rest of the three cases the material was inadequate because of scanty blood mixed aspirate. Light chain restriction was demonstrated in 30 cases out of 40 cases of B-NHL (75%). There were 15 cases each of κ and λ light chain restriction in these 30 cases. With the help of combined FCI and FNAC, it was possible to sub-classify 38 cases of NHL (79%) according to WHO classification. Combined FNAC and FCI data helped to diagnose 9 cases of small lymphocytic lymphoma (SLL), 2 cases of mantle cell lymphoma (MCL), 4 cases of follicular lymphoma (FL), 17 cases of diffuse large B lymphoma (DLBL) and 6 cases of lymphoblastic lymphoma. Histopathology diagnosis was available in 31 cases of NHL out of which there were 14 recurrent and 17 cases of primary NHL. Out of 15 DLBL cases diagnosed on FCI and FNAC, histology confirmed 14 cases and one of these cases was diagnosed as Burkitt's lymphoma on histology. Cases of FL (4), SLL (3) and MCL (2) were well correlated with histopathology. Out of the five cases suggestive of NHL on cytology, histopathology was available in four cases. Histology diagnosis was given as DLBL (1), SLL (1), anaplastic large cell lymphoma (1) and FL transformed into large cell NHL (1). Considering histopathology as gold standard, diagnostic specificity of combined FNAC and FCI was 100% (31/31) and sensitivity in sub-classification was 83.8% (26/31). Conclusion FNAC combined with FCI may be helpful in accurately sub-classifying NHL according to WHO classification. Many of the subtypes of NHL such as FL and MCL which were previously recognized as a pure morphologic entity can be diagnosed by combined use of FNAC and FCI. Other ancillary investigations such as chromosomal changes, cell proliferation markers etc. may be helpful in this aspect.
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Affiliation(s)
- Pranab Dey
- Cytology Department, Kuwait Cancer Control Center, Suwaikh, Kuwait
- Department of cytology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Thasneem Amir
- Cytology Department, Kuwait Cancer Control Center, Suwaikh, Kuwait
| | - Aisha Al Jassar
- Cytology Department, Kuwait Cancer Control Center, Suwaikh, Kuwait
| | - Salem Al Shemmari
- Haematology Department, Kuwait Cancer Control Center, Suwaikh, Kuwait
| | - Sanjay Jogai
- Cytology Department, Kuwait Cancer Control Center, Suwaikh, Kuwait
| | - Ganapathi Bhat M
- Haematology Department, Kuwait Cancer Control Center, Suwaikh, Kuwait
| | - Aisha Al Quallaf
- Flow cytometry Laboratory, Kuwait Cancer Control Center, Suwaikh, Kuwait
| | - Zahia Al Shammari
- Flow cytometry Laboratory, Kuwait Cancer Control Center, Suwaikh, Kuwait
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Kishimoto K, Kitamura T, Fujita K, Tate G, Mitsuya T. Cytologic differential diagnosis of follicular lymphoma grades 1 and 2 from reactive follicular hyperplasia: Cytologic features of fine-needle aspiration smears with Pap stain and fluorescence in situ hybridization analysis to detect t(14;18)(q32;q21) chromosomal translocation. Diagn Cytopathol 2005; 34:11-7. [PMID: 16355396 DOI: 10.1002/dc.20381] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Fine-needle aspiration cytology (FNAC) is a well-established technique for diagnosis of malignant lymphoma (ML). Generally, Giemsa but not Pap stain is used in FNAC. However, cytologic features obtained from Pap stain are also valuable. Very few studies on the cytologic characteristics of ML, as determined by Pap stain, are available. It is easier to observe nuclear irregularity and to identify nucleoli in ML cells by Pap stain than by Giemsa stain. Here, we applied Pap stain for cytomorphologic differential diagnosis of follicular lymphoma (FL) from reactive follicular hyperplasia (RFH). Eighteen biopsy-confirmed cases of FL grades 1 and 2, with available FNAC smears, and six cases of RFH were selected for this study. Low-power magnification showed well-known features, and tingible body macrophages and lymphoid cell aggregates were observed frequently in RFH and FL, respectively. In addition, the so-called two-nuclei-like cleaved cells were observed frequently in FL. These cells showed notably cleaved nuclei, and therefore, appeared to possess two nuclei. Under high-power magnification, the occurrence of cells with nucleoli >1 microm and of cleaved cells was high in FL compared to RFH. It is believed that FL derives from centrocytes and that FL cells are slightly larger than non-neoplastic small lymphocytes. However, analysis of cell diameter in this study indicated that small lymphoma cells were predominant in half the cases of FL grades 1 and 2, and the percentage of these cells was similar to that in RFH, showing why false-negative diagnosis of FL grades 1 and 2 occasionally occurs. There are limitations of FNAC in the diagnosis of FL. However, we believe that the appearance of two-nuclei-like cleaved cells and the high percentage of nucleoli-possessing cells, which we describe here, provide significant and valuable clues for the differential diagnosis of FL from RFH. Of 18 cases of FL grades 1 and 2, t(14;18)(q32;q21) was found in 13 cases with the use of destained FNAC smears. Our study suggests that, together with the cytomorphologic findings described earlier, FISH analysis for the chromosomal translocation, t(14;18)(q32;q21), is crucial for final cytologic diagnosis of FL grades 1 and 2.
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MESH Headings
- Biopsy, Fine-Needle
- Chromosomes, Human, Pair 14
- Chromosomes, Human, Pair 18
- Coloring Agents
- Cytodiagnosis/methods
- Diagnosis, Differential
- Feasibility Studies
- Humans
- Hyperplasia/diagnosis
- Hyperplasia/pathology
- In Situ Hybridization, Fluorescence
- Lymphoma, Follicular/diagnosis
- Lymphoma, Follicular/genetics
- Lymphoma, Follicular/pathology
- Retrospective Studies
- Translocation, Genetic
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Affiliation(s)
- Koji Kishimoto
- Department of Pathology, Showa University Fujigaoka Hospital, Yokohama, Japan.
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Safley AM, Buckley PJ, Creager AJ, Dash RC, Dodd LG, Goodman BK, Jones CK, Lagoo AS, Stenzel TT, Wang W, Xie B, Gong JZ. The Value of Fluorescence In Situ Hybridization and Polymerase Chain Reaction in the Diagnosis of B-Cell Non-Hodgkin Lymphoma by Fine-Needle Aspiration. Arch Pathol Lab Med 2004; 128:1395-403. [PMID: 15578884 DOI: 10.5858/2004-128-1395-tvofis] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Context.—Molecular genetic analyses have been predicted to improve the diagnostic accuracy of fine-needle aspiration of B-cell non-Hodgkin lymphoma.
Objective.—To determine the value of routine molecular genetic assays, polymerase chain reaction (PCR) and fluorescence in situ hybridization (FISH), in the diagnosis of B-cell non-Hodgkin lymphoma by fine-needle aspiration (FNA).
Design.—A multiparametric method, including cytology, flow cytometry, PCR, and FISH, was prospectively evaluated in the diagnosis of B-cell non-Hodgkin lymphoma by FNA. Aspirates from 30 consecutive patients with suspected hematolymphoid malignancies were collected. All aspirates were triaged through a uniform program including cell-size analysis, B- and T-cell clonality studies, flow cytometric immunophenotyping, and bcl-1 and bcl-2 gene rearrangements by PCR and FISH. After completion of FNA evaluations, FNA results were compared with diagnoses from prior or subsequent surgical biopsies.
Results.—Monoclonal B-cell populations were detected in 18 of 20 B-cell non-Hodgkin lymphomas by flow cytometry and PCR. bcl-1 gene rearrangement was detected in 2 of 2 cases of mantle cell lymphoma. bcl-2 rearrangement was detected in 5 cases including 4 of 4 low-grade follicular lymphomas and 1 transformed follicular lymphoma. By incorporating the results of molecular genetic and ancillary diagnostics, a definitive classification was reached in 12 cases of B-cell non-Hodgkin lymphoma by FNA, including all cases of low-grade follicular lymphoma (4/4) and mantle cell lymphoma (2/2) and approximately 50% of small lymphocytic lymphoma (2/4) and large B-cell lymphoma (4/8). Ten of the 12 cases with a final classification reached by FNA had either prior or follow-up surgical biopsies, and all 10 cases showed agreement between the diagnoses rendered on FNA and surgical biopsies.
Conclusions.—With proper handling and management of specimens, FNA can routinely provide samples adequate for molecular genetic studies, in addition to cytomorphology and flow cytometry, making it possible to consistently render accurate and definitive diagnoses in a subset of B-cell non-Hodgkin lymphomas. By incorporating FISH and PCR methods, FNA may assume an expanded role for the primary diagnosis of B-cell non-Hodgkin lymphoma.
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Affiliation(s)
- Anne M Safley
- Department of Pathology, Duke University Medical Center, Durham, NC 27710, USA
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Affiliation(s)
- Aseem Lal
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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12
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