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Prognostic value of single nodal zone metastasis in non-small-cell lung cancer
Kim, M.S.,Lee, H.S.,Lee, J.M.,Zo, J.I.,Lee, G.K.,Nam, B.H. Springer International ; Springer-Verlag New York 2010 European journal of cardio-thoracic surgery Vol.38 No.4
Objective: Mediastinal nodal metastasis is related to poor prognosis in surgically resected non-small-cell lung cancer (NSCLC) and the prognosis becomes worse with an increasing number of nodal stations involved. However, intra-operative designation of each nodal station might be difficult and confusing because of the adjacency of the nodal stations, and this may cause inaccurate nodal staging. The new concept of a 'nodal zone' was proposed by the IASLC lung cancer staging project (IALC, International Association for the Study of Lung Cancer), and we investigated the impact of the 'nodal zone' on the survival of pathological N2 patients. Methods: From a total of 1186 patients with NSCLC, who underwent surgical resection with curative intent, we analysed the survival data of 217 patients with ipsilateral mediastinal metastasis retrospectively. Results: The operative mortality rate was 1.4% (three patients) and median follow-up period was 35.4 months. The 5-year overall survival rate was 36.5% (median: 39.3 months; confidence interval (CI): 32.05-46.62). Median disease-free survival was 17.4 months (CI: 13.84-21.03). Overall and disease-free survival were better in the single-zone metastasis group than in the multiple zone group (median: 48.5 vs 33.4 months, p=0.001, CI: 32.05-46.62, and 20.4 vs 10.6 months, p<0.001, CI: 13.84-21.03). Among those of the single nodal zone metastasis group, no differences were found between the single and multiple nodal station metastasis groups in overall and disease-free survival. Conclusions: Patients with single nodal zone metastasis showed favourable outcomes compared with the multiple zone metastasis group. Even though two or more nodal stations were involved, the outcome was favourable if the nodal stations involved were confined to a single nodal zone. In conclusion, patients with single nodal zone metastasis can benefit from surgical resection.
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Gupta, Dhanoj,Choi, Heechol,Song, Mi-Young,Karwasz, Grzegorz P.,Yoon, Jung-Sik Springer-Verlag 2017 European Physical Journal D Vol.71 No.4
<P>The total ionization cross section for C2Fx (x = 1-6) and C3Fx (x = 1-8) fluorocarbon species are studied with the Binary-Encounter Bethe (BEB) model using various orbital parameters calculated from restricted/unrestricted Hartree-Fock (RHF/UHF) and Density Functional Theory (DFT). All the targets were optimized for their minimal structures and energies with several ab-initio methods with the aug-cc-pVTZ basis set. Among them, the present results with RHF/UHF orbital energies showed good agreement with the experimental results for stable targets C2F6, C2F4, C3F6 and C3F8. The results with the DFT (omega B97X/omega B97X-D) showed a reasonable agreement with the recent calculation of Bull et al. [J. N. Bull, M. Bart, C. Vallance, P. W. Harland, Phys. Rev. A 88, 062710 (2013)] for C2F6, C3F6 and C3F8 targets. The ionization cross section for C2F, C2F2, C2F3, C3F, C3F2, C3F3, C3F4, C3F5 and C3F7 were computed for the first time in the present study. We have also computed the vertical ionization potentials and polarizability for all the targets and compared them with other experimental and theoretical values. A good agreement is found between the present and the previous results. The calculated polarizability in turn is used to study the correlation with maximum ionization cross section and in general a good correlation is found among them, confirming the consistency and reliability of the present data. The cross section data reported in this article are very important for plasma modeling especially related to fluorocarbon plasmas.</P>
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