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Swedish Lung Cancer Radiation Study Group: Predictive value of histology for radiotherapy response in patients with non-small cell lung cancer
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2011 (English)In: European Journal of Cancer, ISSN 0959-8049, E-ISSN 1879-0852, Vol. 47, no 16, 2415-2421 p.Article in journal (Refereed) Published
Abstract [en]

The aim of the present study was to evaluate the potential predictive value of histology in non-small cell lung cancer (NSCLC) treated with curatively intended radiotherapy. In a collaborative effort among all the Swedish Oncology Departments, clinical data were collected for 1146 patients with a diagnosed non-small cell lung cancer subjected to curatively intended irradiation (>= 50 Gy) during the years 1990 to 2000. The included patients were identified based on a manual search of all medical and radiation charts at the oncology departments from which the individual patient data were collected. Only patients who did not have a histological diagnosis date and death date/last follow-up date were excluded (n = 141). Among the 1146 patients with non-small cell carcinoma eligible for analysis, 919 were diagnosed with either adenocarcinoma (n = 323) or squamous cell carcinoma (n = 596) and included in this study. The median survival for the 919 patients was 14.8 months, while the 5-year survival rate was 9.5%. Patients with adenocarcinoma had a significantly better overall survival compared with patients with squamous cell carcinoma (p = 0.0062, log-rank test). When comparing different stages, this survival benefit was most pronounced for stages IIA-IIB (p<0.0001, log-rank test). The difference in survival between the two histological groups was statistically significant in a univariate Cox analysis (p = 0.0063) as well as in two multivariate Cox analyses including demographic and treatment variables (p = 0.037 and p = 0.048, respectively). In this large population based retrospective study we describe for the first time that patients with adenocarcinoma have a better survival after curatively intended radiation therapy in comparison with squamous cell carcinoma patients, particularly those with clinical stages IIA-IIB. (C) 2011 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2011. Vol. 47, no 16, 2415-2421 p.
Keyword [en]
Lung cancer, Non-small cell lung cancer, Histology, Predictive value, Adenocarcinoma, Squamous cell carcinoma
National Category
Cancer and Oncology
Identifiers
URN: urn:nbn:se:umu:diva-50947DOI: 10.1016/j.ejca.2011.06.011ISI: 000297452000007OAI: oai:DiVA.org:umu-50947DiVA: diva2:473212
Available from: 2012-01-05 Created: 2012-01-02 Last updated: 2017-12-08Bibliographically approved

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Henriksson, Roger

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