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Analysis of the characteristics and prognosis of advanced non-small-cell lung cancer in older patients

Authors Gao Y, Gao F, Ma J, Zhang X, Li Y, Song L, Zhao D

Received 21 April 2015

Accepted for publication 12 June 2015

Published 19 August 2015 Volume 2015:9 Pages 1189—1194

DOI https://doi.org/10.2147/PPA.S87069

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Naifeng Liu

Ying Gao,1,* Fei Gao,2,* Jin-lu Ma,1,* Xiao-zhi Zhang,1 Yi Li,1 Li-ping Song,1 Dong-li Zhao1

1Department of Radiotherapy Oncology, First Affiliated Hospital of Xi’an Jiaotong University, 2Department of Neurology, First Affiliated Hospital of Xi’an Medical University, Xi’an, People’s Republic of China

*These authors contributed equally to this work

Objective: Lung cancer is still the leading cause of cancer-related deaths worldwide. However, most elderly patients with advanced non-small-cell lung cancer (NSCLC) have been undertreated and the outcome related to age is controversial. A retrospective analysis was conducted for advanced NSCLC in order to investigate the characteristics and prognosis of older patients.
Methods: Medical records were collected from 165 patients with NSCLC (stages IIIA–IIIB) who had been treated with concurrent chemoradiotherapy (CRT) or radiotherapy from January 2009 to January 2011. The cases were divided into two age groups 1) patients ≥70 years old; 2) patients <70 years old. There were 73 patients in group I, 92 in group II. Patient characteristics, treatment toxicities, and prognosis were evaluated.
Results: Of the 165 patients analyzed, 34 patients (34/73) in group I received concurrent CRT while 47 (47/92) in group II completed that treatment. No significant difference was observed in the reason for patients who discontinued CRT in two groups (P>0.05). In the patients with adenocarcinoma, more cases were found in group II than that in group I; the more squamous cell carcinoma and the more smokers with squamous cell carcinoma were seen in older group (P<0.05). With a median follow-up of 20.5 months, the 1-year survival for group I and II were 49.3% and 40.2% respectively (P=0.243). Two-year survival for the two groups was 20.5% and 16.3% (P=0.483); 3-year survival was 9.6% and 9.8% (P=0.967). There was no significant difference between two groups statistically in survival by univariate analysis (P>0.05). The therapy-related toxicities in group I seem to be similar to the group II (P>0.05).
Conclusion: More adenocarcinoma patients were found in youthful lung cancer and the more smokers with squamous cell carcinoma were seen in older group. Age is not the important factor for the selection and allocation of treatment in advanced NSCLC. The same prognosis and toxicities had been shown in older and young. Age may not be an independent increased risk of death in advanced NSCLC.

Keywords: advanced non-small-cell lung cancer, age, prognosis

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