Natural history, clinicopathologic classification and prognosis of gastric ECL cell tumors

E. Solcia, G. Rindi, D. Paolotti, O. Luinetti, C. Klersy, A. Zangrandi, S. La Rosa, C. Capella

Research output: Contribution to journalArticle

Abstract

A series of 50 gastric endocrine tumors classified according to Rindi et al. [1] comprised 12 small cell neuroendocrine carcinomas (NEC) and 38 ECL cell carcinoids, of which 22 associated with type A chronic atrophic gastritis (A-CAG), eight with hypertrophic gastropathy due to combined Multiple Endocrine Neoplasia and Zollinger/Ellison syndrome (MEN/ZES), and eight sporadic. Variables found to predict tumor malignancy were: size > 2 cm, > 2 mitoses and > 130 Ki67 positive cells/10 high power fields (HPF), grade 2 or 3 histology, angioinvasion, p53 protein nuclear accumulation, and the presence of a single tumor. None of these factors increased significantly the predicting ability of tumor classification itself, although grade 2+3 shows 100 percent negative predictive value and Ki67 and angioinvasion 100 percent positive predictive value. When the mostly non-malignant A-CAG and MEN-ZES tumors were analysed against the mostly malignant sporadic and NEC tumors, a positive predictive value of 90 percent and a negative predictive value of 93 percent was obtained. Investigation of a larger tumor series is under way with the aim to develop an optimal model for prognostic evaluation of gastric endocrine tumors.

Original languageEnglish
Pages (from-to)285-290
Number of pages6
JournalYale Journal of Biology and Medicine
Volume71
Issue number3-4
Publication statusPublished - 1999

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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