Document Detail

Immunohistological diagnosis of plasma cell myeloma based on the cytoplasmic kappa/lambda ratio of CD138-positive plasma cells.
MedLine Citation:
PMID:  22506669     Owner:  NLM     Status:  Publisher    
Abstract For differentiating reactive plasmacytosis from clonal plasma cell neoplasms such as plasma cell myeloma (PCM), it is important to determine the expression of the cytoplasmic light chain accurately. Through retrospective analysis, we studied the cytoplasmic kappa/lambda ratio of CD138-positive plasma cells in bone marrow from 50 PCM patients and 50 controls by immunohistological analysis. The percentage of cytoplasmic light chain immunoreactive cells out of the total plasma cell population was shown by a novel quantitative image analysis approach using an Aperio Scanscope CS and the Membrane v9 algorithm. PCM cells were distinguished from normal plasma cells by cut-off levels between 0.35 and 5.5, a sensitivity of 100%, and a specificity of 98.0%. Detection of the cytoplasmic kappa/lambda ratio of CD138-positive plasma cells could be a useful tool for simple, efficient and accurate diagnosis of PCM.
Shoko Nakayama-Ichiyama; Taiji Yokote; Yuji Hirata; Kazuki Iwaki; Toshikazu Akioka; Takuji Miyoshi; Ayami Takayama; Uta Nishiwaki; Yuki Masuda; Yasuichiro Nishimura; Motomu Tsuji; Toshiaki Hanafusa
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-17
Journal Detail:
Title:  Leukemia & lymphoma     Volume:  -     ISSN:  1029-2403     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9007422     Medline TA:  Leuk Lymphoma     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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