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- W3201935971 abstract "La découverte de tumeurs primitives pulmonaires multifocales synchrones n’est pas exceptionnelle. Distinguer les métastases pulmonaires d’une tumeur, de tumeurs primitives multiples synchrones représente un challenge pour le pathologiste et pour le clinicien. Nous présentons l’observation d’un patient présentant trois tumeurs pulmonaires correspondant à trois adénocarcinomes pour lesquels l’examen en biologie moléculaire a eu un impact déterminant dans la stadification. Un homme de 61 ans, fumeur, présente trois lésions suspectes dans chaque lobe au sein du poumon droit. Une pneumonectomie droite avec curage ganglionnaire lymphatique est réalisée. L’examen anatomopathologique montre qu’il s’agit d’un adénocarcinome pour chaque tumeur. Pour mieux préciser la parenté de ces tumeurs, un examen de biologie moléculaire a été réalisé par séquençage multiple massif parallèle (NGS, Panel Colon Lung V2). Cet examen montre la présence de mutations différentes sur chaque tumeur. Le diagnostic final retenu est donc celui de trois tumeurs distinctes, synchrones, devant chacune faire l’objet d’une stadification distincte, soit respectivement pT2aN1, pT1bN0, pT1bN0. Dans une pratique moderne d’oncologie thoracique et d’anatomie pathologique la biologie moléculaire représente un complément à la stadification des tumeurs en cas de tumeurs multiples. The presence of multiple synchronous lung tumors is not a rare event. Distinguishing intra-pulmonary metastases from multiple synchronous lung adenocarcinoma is a challenge for pathologists and physicians. We present observation of a patient with three lung tumors corresponding to three adenocarcinomas for which molecular analysis had a significant impact on tumor staging. Three suspect lesions were discovered in a 61-year-old patient, a smoker, in each lobe of the right lung. Right pneumonectomy with lymph node dissection was performed. Pathological examination showed that each tumor was in fact an adenocarcinoma. In order to more precisely indicate tumor staging, molecular analysis was performed with next generation sequencing showing a different point mutation in a driver gene on each tumor. The final diagnosis is that the three tumors are distinct synchronous tumors, which must be staged separately. In modern-day practice of thoracic oncology and of surgical pathology, molecular biology represents a complement for tumor staging in the event of multiple lung tumors." @default.
- W3201935971 created "2021-10-11" @default.
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- W3201935971 date "2021-09-01" @default.
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- W3201935971 title "Adénocarcinomes pulmonaires multifocaux synchrones : intérêt de la biologie moléculaire pour la stadification" @default.
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- W3201935971 doi "https://doi.org/10.1016/j.rmr.2021.09.001" @default.
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