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Published in: Virchows Archiv 1/2024

29-09-2023 | Carcinoid Tumor | Original Article

Clinical impact of mixed pulmonary carcinoma and carcinoid: the driver from their mono-clonal origin

Authors: Paolo Graziano, Paola Parente, Flavia Centra, Massimo Milione, Giovanni Centonze, Marco Volante, Alberto Cavazza, Diego Urbano, Giuseppe Di Maggio, Teresa Balsamo, Concetta Di Micco, Giulio Rossi, Antonio Rossi, Lucia Anna Muscarella

Published in: Virchows Archiv | Issue 1/2024

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Abstract

The combination of neuroendocrine/non neuroendocrine lung tumors (CNNELT) mentioned in the last edition of the World Health Organization (WHO) of Thoracic Tumors refers to small cell carcinoma (SCLC) or large cell neuroendocrine carcinoma (LCNEC) mixed with any other non-small cell lung carcinoma (NSCLC). Typical Carcinoid (TC)/Atypical Carcinoid (AC) combined with NSCLC is not included among this category. However, case reports of TC/AC combined with NSCLC have been described. We previously reported 2 cases of lung adenocarcinoma (LUA) mixed with carcinoid sharing mutations in both components supporting the hypothesis of a clonal origin. We extended our analysis to other four cases of mixed NSCLC-carcinoid by performing targeted-DNA and RNA-based NGS analysis in both primary and their paired lymph nodes metastasis. In all cases, LUA and AC components shared at least 1 common mutation (KRAS driver mutation p.Gly12Val in cases 1 and 3, AKAP13-RET fusion in case 2, and missense KRAS driver mutation p.Gly12Ala in case 4, reinforcing the hypothesis of a clonal origin. Moreover, the same mutation was detected in the metastasis constituted only by AC (cases 2 and 4). Although it is a rare malignancy in the lung, mixed LUA and TC/AC could be included among the histotypes for which a deep molecular characterization of both components is needed to identify the presence of potential druggable genetic alterations.
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Metadata
Title
Clinical impact of mixed pulmonary carcinoma and carcinoid: the driver from their mono-clonal origin
Authors
Paolo Graziano
Paola Parente
Flavia Centra
Massimo Milione
Giovanni Centonze
Marco Volante
Alberto Cavazza
Diego Urbano
Giuseppe Di Maggio
Teresa Balsamo
Concetta Di Micco
Giulio Rossi
Antonio Rossi
Lucia Anna Muscarella
Publication date
29-09-2023
Publisher
Springer Berlin Heidelberg
Published in
Virchows Archiv / Issue 1/2024
Print ISSN: 0945-6317
Electronic ISSN: 1432-2307
DOI
https://doi.org/10.1007/s00428-023-03663-x

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