Linked Life Data

16861964

Source:http://linkedlifedata.com/resource/pubmed/id/16861964

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
2006-7-24
pubmed:abstractText
The current histologic classifications of gastric cancers define only carcinoids and small cell carcinomas in the neuroendocrine (NE) category. This study aimed to characterize the histologic and clinical features of high-grade gastric NE carcinomas of nonsmall cell type, tentatively named large cell neuroendocrine carcinoma (LCNEC). Tumors with histologic features suspicious of NE differentiation were selected by a histologic review of 2835 resected gastric cancers, and those with a NE phenotype in > 50% and 1% to approximately 50% tumor cells assessed by expressing chromogranin A and/or synaptophysin were defined as LCNEC and adenocarcinoma with neuroendocrine differentiation (ACNED), respectively. One hundred ninety-nine tumors were selected and of the 109 positive for chromogranin A and/or synaptophysin, 42 and 44 met the criteria for LCNEC and ACNED, respectively. Generally, LCNECs demonstrated less predominant NE morphology than carcinoids, and could be roughly divided into solid (30 cases), tubular (7 cases), and scirrhous (5 cases) subtypes with reference to their main growth pattern. The prognosis of LCNECs was significantly worse than that of conventional adenocarcinomas (P < 0.0001). Thus, this study shows that the spectrum of gastric NE tumors is broader than has previously been recognized and LCNEC is not only a distinct histopathologic entity, but also a distinct clinical entity. Furthermore, the prognosis of ACNEDs was also significantly worse than that of adenocarcinomas (P < 0.0001), and some ACNEDs might actually have been LCNECs, and survival analysis showed that > 20% positivity of NE markers could be enough to characterize LCNEC, as long as light microscopic NE morphology was present in the tumor.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0147-5185
pubmed:author
pubmed:issnType
Print
pubmed:volume
30
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
945-53
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Gastric large cell neuroendocrine carcinomas: a distinct clinicopathologic entity.
pubmed:affiliation
Department of Pathology, Kitasato University School of Medicine, Sagamihara, Kanagawa 228-8555, Japan. sxjiang@med.kitasato-u.ac.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't