Document Detail

Napsin a expression in primary mucin-producing adenocarcinomas of the lung: an immunohistochemical study.
MedLine Citation:
PMID:  23355200     Owner:  NLM     Status:  In-Data-Review    
Immunohistochemical expression of napsin A in primary pulmonary mucinous tumors is not well established. Napsin A immunoreactivity was evaluated in 43 mucin-producing adenocarcinomas of the lung consisting of 18 tumors formerly classified as mucinous bronchioloalveolar carcinoma, 15 colloid adenocarcinomas, 5 solid predominant adenocarcinomas with mucin production, and 5 adenocarcinomas with signet ring cell features, as well as in 25 extrapulmonary mucinous adenocarcinomas of different anatomic sites. Immunohistochemical expression of thyroid transcription factor 1 (TTF-1) was also compared. Thirty-three percent of mucinous lung tumors exhibited positive immunoreactivity for napsin A, whereas 42% expressed TTF-1. All 25 extrapulmonary mucinous adenocarcinomas lacked expression of napsin A and TTF-1. Mucin-producing neoplasms of the lung infrequently express napsin A, suggesting that immunohistochemical assessment of napsin A may have limited diagnostic usefulness for distinguishing primary and metastatic mucinous adenocarcinomas involving the lung.
Jeffrey Wu; Peiguo G Chu; Zhong Jiang; Sean K Lau
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of clinical pathology     Volume:  139     ISSN:  1943-7722     ISO Abbreviation:  Am. J. Clin. Pathol.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370470     Medline TA:  Am J Clin Pathol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  160-6     Citation Subset:  AIM; IM    
Dept of Pathology, Kaiser Foundation Hospital, Orange County-Anaheim, 3440 East La Palma Ave, Anaheim, CA 92806;
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