Document Detail

Epithelial-mesenchymal transition markers in the differential diagnosis of gastroenteropancreatic neuroendocrine tumors.
MedLine Citation:
PMID:  23765535     Owner:  NLM     Status:  In-Data-Review    
Objectives: To elucidate the role of epithelial-mesenchymal transition markers in gastroenteropancreatic neuroendocrine tumors (GEP NETs) and the potential usefulness in their clinical management. Methods: One hundred ten GEP NET paraffin-embedded samples were immunohistochemically analyzed for E-cadherin, N-cadherin, β-catenin, vimentin, Snail1, Snail2, Twist, and Foxc2 protein expression. Results: The 5-year survival rate was reduced for those patients showing high Snail1 protein levels, a cytoplasmic E-cadherin pattern, reduced N-cadherin expression, and loss of E-cadherin/β-catenin adhesion complex integrity at the cell membrane. Interestingly, high β-catenin expression was useful in identifying a grade 1 NET subgroup with a favorable clinical course. Importantly, it also helped to discriminate small-cell vs large-cell grade 3 neuroendocrine carcinomas. Conclusions: β-Catenin and N-cadherin immunohistochemical detection might be a useful tool in the differential diagnosis of small-cell vs large-cell G3 neuroendocrine carcinomas. High Snail1 and Foxc2 expression is associated with the invasion and metastatic spread of GEP NETs.
Jose A Galván; Aurora Astudillo; Aitana Vallina; Paula J Fonseca; Lourdes Gómez-Izquierdo; Rocío García-Carbonero; Maria Victoria González
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of clinical pathology     Volume:  140     ISSN:  1943-7722     ISO Abbreviation:  Am. J. Clin. Pathol.     Publication Date:  2013 Jul 
Date Detail:
Created Date:  2013-06-14     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:  61-72     Citation Subset:  AIM; IM    
Laboratorio del Banco de Tumores-Anatomia Patológica, c/ Celestino Villamil, s/n, 33006 Oviedo, Spain;
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