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doi: https://doi.org/10.4143/crt.2018.704    [Accepted]
Report of the Korean Association of Lung Cancer Registry (KALC-R), 2014
Chang-Min Choi1,2, Ho Cheol Kim1, Chi Young Jung3, Deog Gon Cho4, Jae Hyun Jeon5, Jeong Eun Lee6, Jin Seok Ahn7, Seung Joon Kim8, Yeongdae Kim9, Jung-Eun Kim10, Boram Lee10, Young-Joo Won10, Young-Chul Kim11,12
1Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
2Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
3Department of Internal Medicine, Daegu Catholic University School of Medicine, Daegu, Korea
4Department of Thoracic & Cardiovascular Surgery, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
5Center for Lung Cancer, National Cancer Center, Goyang, Korea
6Division of Pulmonology, Department of Internal Medicine, Chungnam National University, Daejeon, Korea
7Department of Medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea
8Division of Pulmonology, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
9Department of Cardiothoracic Surgery, Pusan National University Hospital, Busan, Korea
10Cancer Registration and Statistics Branch, National Cancer Center, Goyang, Korea
11Department of Internal Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea
12Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
Correspondence  Young-Chul Kim ,Tel: 82-61-379-7614, Fax: 82-61-379-7619, Email: kyc0923@jnu.ac.kr
Received: December 19, 2018;  Accepted: February 22, 2019.  Published online: February 25, 2019.
*Chang-Min Choi and Ho Cheol Kim contributed equally to this work.
The aim of this study was to investigate epidemiology, clinical characteristics and sex differences of patients with lung cancer using nationwide registry in Korea.
Materials and Methods
The Korean Association for Lung Cancer developed a registry in cooperation with the Korean Central Cancer Registry, and surveyed about 10% of lung cancer cases. For this first survey of cases diagnosed in 2014, cases were selected through a systematic sampling method.
Total 2,621 lung cancer patients were surveyed, and the median patient age was 70 years. During the study period, adenocarcinoma was the most frequent histologic type, the proportion of female patients was 28.4%, and women had a better prognosis (median survival: not reached vs. 13 months, p<0.001) than did men for non-small cell lung cancer. The proportion of never-smokers was 36.4%, and never-smoking was more prevalent in women than in men (87.5 vs. 16.0%, p<0.001). Epidermal growth factor receptor (EGFR) mutations were found in 36.8% of stage IV adenocarcinoma patients, and higher in female compared to male patients (51.2 vs. 26.6%, p<0.001). In addition, patients with EGFR mutation showed better survival (median survival, 18 vs. 8 months; p<0.001) than patients without EGFR mutation in these patients.
This is the first survey to gather unbiased nationwide lung cancer statistics in Korea. More than one third of lung cancer patients had no smoking history. Female had a high proportion of non-smoker, more adenocarcinoma with EGFR mutation and generally better prognosis than male.
Key words: Lung neoplasms, Epidemiology, Korea, Never-smokers, Epidermal growth factor receptor
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