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OBJECTIVE: We compared the survival outcomes of surgery within multimodality treatment regimens with the outcomes of definitive chemoradiation treatments in patients diagnosed with clinical (c) IIIB/N2 non-small cell lung cancer (NSCLC). We investigated whether surgery within multimodality treatment provides a survival advantage at this stage. MATERIAL AND METHODS: Data from 79 patients with cIIIB/N2 between 2009 and 2016 were analyzed retrospectively. While the surgery was performed after neoadjuvant therapy in 51 cases (IIIB/Surgery Group), definitive chemotherapy ± radiotherapy was applied in 28 cases (IIIB/Definitive Group). RESULTS: In cIIIB/N2 cases, the 5-year overall survival (OS) was 27.4%, with a median OS of 24.6 months. The 5-year OS of the IIIB/ Surgery Group was 27.3% (median survival 22.5 months), while it was 28.6% (median survival 29.1 months) in the IIIB/Definitive Group (P = .387, HR = 0.798, 95% CI, 0.485-1.313). Although there was a survival advantage in the group with a pathological complete response (PCR) after surgery (n = 14) compared to the group that did not (n = 37), the observed difference was not statistically significant. (5-year OS; 42.9% vs. 18.5%, P = .104). Additionally, there was no statistically significant difference between the survival of PCR patients and the IIIB/Definitive Group in terms of OS (P = .488). CONCLUSION: Surgery performed within multimodality treatment regimens in selected cIIIB/N2 cases did not provide a survival advantage over definitive chemoradiation treatments. [ABSTRACT FROM AUTHOR]

OBJECTIVES: Neuroendocrine tumors of the lungs are a clearly different group of tumors with definite ultrastructural, immunohistochemical, and molecular features. We reported and analyzed the incidence, clinicopathological features, surgery rates, responses to first-line therapy, and survival outcomes of this rare condition according to our lung cancer patient database. MATERIALS AND METHODS: We retrospectively collected the data of 62 patients who were histopathologically diagnosed with large cell neuroendocrine carcinoma of lung (LCNEC) between January 2010 and January 2016. RESULTS: The patients were predominantly (95%) men (male:female=59:3) with their average age being 60.3±8.6 years. Diagnosis was made by the fine-needle aspiration biopsy (NAB) in 7 patients, bronchoscopic transbronchial biopsy in 13, and surgery in 42. Nearly 43.5% of the patients presented with the tumor in the right upper lobe. Additionally, tumors of 46.8% patients could be observed in peripheral locations. Sixteen patients presented with stage 1, 17 with stage 2, 15 with stage 3, and 14 with stage 4. Median progression-free survival (PFS) was 29 months (SE: 12.2) (95% CI, 5.2-52.8 months). Progression-free survival (PFS) was significantly better in patients with low N, M0, early stage, p63 positive, and TTF-1 positive across the entire cohort. Overall survival (OS) was significantly better in patients with comparatively lower N, M0, low stage, and peripheral location. CONCLUSION: This study demonstrated a single-center experience with clinicopathologic factors and survival outcomes of LCNEC patients. [ABSTRACT FROM AUTHOR]