Establishment of therapeutic strategy for synchronous double lung cancers based on molecular analysis

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We performed molecular analysis of 12 synchronous double lung cancer patients without lymph node metastasis (intrapulmonary metastasis in the same lobe (pm1): n=6, primary: n=6). We then evaluated the clinical outcomes of patients with pathologically diagnosed synchronous double lung cancers (intrapulmonary metastasis (pm): n=80, primary: n=39) and other T3 tumors (n=230). Examination of the concordance rate (CR) of the copy number changes (CNCs) for paired tumors showed that the metastasis group was larger than the primary group (55.5% vs. 19.6%, p=0.04). Pathological diagnosis and molecular classification were the same in 10 out of 12 cases (83%). Both pathological and molecular assessment using aCGH adapted in the current study appeared to have a consistency.