Abstract:
BACKGROUND:Bone marrow (BM) study plays an important role as initial investigation specimen of lymphoma as well as staging lymphoma. This study aimed to investigate the utility of BM studies for classification of lymphoma and evaluate features of BM involvement by lymphoma over a period of 11 years. METHODS:A total of 1162 cases of BM studies for lymphoma evaluation were reviewed for the incidence of lymphoma subtypes, the percentage of marrow involvement, the pattern of involvement and discordance with histopathologic diagnoses of lymph nodes and other tissues. RESULTS:A total of 255 of 1162 cases underwent BM study without pathologic information, and 108 cases show lymphoma involvement. Lymph node biopsy underwent in 66 cases, and 10 cases show discordant result between BM and lymph node biopsy. Seven discordant cases were due to insufficient further studies. Lymphoma was diagnosed only by BM study in 38 cases. Abnormal lymphocytes were found in BM aspiration in 34 cases. Also, abnormal clonal lymphocytes were detected by flow cytometry in 26 cases. Four cases showed disease-related chromosomal abnormalities. FISH analysis detected abnormal findings in two cases, however, discordant with other additional studies. CONCLUSIONS:Discrepancies between the BM study and lymph node biopsy were due to insufficient further study and discordance of immunohistochemical stain result. BM study can be utilized as initial diagnosis of lymphoma by the combination of morphological feature, involvement pattern, and additional tests such as flow cytometry, chromosomal analysis, and FISH analysis. Thus, BM study with further analysis is an essential choice when lymph node biopsies are unavailable.
journal_name
J Clin Lab Analjournal_title
Journal of clinical laboratory analysisauthors
Kwoun WJ,Ahn JY,Park PW,Seo YH,Kim KH,Seo JY,Lee HT,Yoo KHdoi
10.1002/jcla.22841subject
Has Abstractpub_date
2019-05-01 00:00:00pages
e22841issue
4eissn
0887-8013issn
1098-2825journal_volume
33pub_type
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journal_title:Journal of clinical laboratory analysis
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journal_title:Journal of clinical laboratory analysis
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