Abstract Library

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#3910 Integrative molecular analysis of lung neuroendocrine neoplasms with different Ki-67 indices identifies a molecular transition group between low- and high-grade neoplasms

Introduction: In the 2021 World Health Organization (WHO) classification of lung cancers, lung neuroendocrine neoplasms (LNENs) are classified as low-grade, intermediate-grade and high-grade based on mitotic count but not Ki-67 index, as for GEP-NENs.

Conference:

Presenting Author:

Authors: Simbolo M, Centonze G, Ali G, Grillo F, Sabella G,

Keywords: lung neuroendocrine tumor, NET grade 3, next generation sequencing, transcriptomics,

#2922 Clinicopathological Characteristics of Borderline Pulmonary Neuroendocrine Neoplasms

Introduction: According to the WHO 2015 classification pulmonary neuroendocrine neoplasms (NENs) are subdivided in carcinoids and neuroendocrine carcinoma (small cell lung carcinoma and large cell neuroendocrine carcinoma (LCNEC)), based on the presence of necrosis and mitotic index (MI). However, in some NENs a discrepancy is observed between grade of differentiation and proliferation rate.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Hermans B, Derks J, Moonen L, Habraken C, von der Thusen J,

Keywords: Borderline tumor, NET grade 3, LCNEC, atypical carcinoid, WHO-classification,