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Patterns of Care for Radiotherapy in the Neoadjuvant and Adjuvant Treatment of Gastric Cancer: A Twelve-Year Nationwide Cohort Study in Korea

 Jee Suk Chang  ;  Young Choi  ;  Jaeyong Shin  ;  Kyung Hwan Kim  ;  Ki Chang Keum  ;  Hyo Song Kim  ;  Woong Sub Koom  ;  Eun-Cheol Park 
 Cancer Research and Treatment, Vol.50(1) : 118-128, 2018 
Journal Title
 Cancer Research and Treatment 
Issue Date
Adjuvant radiotherapy ; Chemoradiotherapy ; Physicians' practice patterns ; Stomach neoplasms
PURPOSE: Although Korea has the highest incidence of gastric cancer worldwide and D2-lymphadenectomies are routinely performed, radiotherapy (RT) practice patterns have not been well studied. Therefore, we examined RT usage trends for neoadjuvant/adjuvant patients and identified factors associated with RT. We also examined survival benefits and net medical cost advantages of adding RT. MATERIALS AND METHODS: Patients diagnosed with gastric cancer who underwent gastrectomy from 2002-2013 were identified using National Health Insurance Service-National Sample Cohort. RESULTS: Annually, 30.9 cases per 100,000 population in crude rate underwent gastrectomy in 230 hospitals and 49.8% received neoadjuvant/adjuvant therapy in 182 hospitals. For neoadjuvant/adjuvant patients, postoperative chemo-RT was administered in 4% of cases in 26 hospitals. No significant trends regarding treatment type were observed over time. Having undergone RT was inversely associated with being >/= 60 years old and having a low income. Having undergone RT was positively related to having a Charlson comorbidity index >/= 4, hospital location and hospital volume (>/= 2,000 beds). Significant portions of patients treated with RT in this nation (52%) were concentrated in one large-volume hospital. Use of RT linked to increased cost of primary treatment, yet not to reduced overall medical expense. RT did not influence both on overall and disease-specific survivals after adjusting for potential confounders (p > 0.05). CONCLUSION: RT was uncommonly utilized as adjuvant or neoadjuvant treatment by physicians in Korea. Despite intrinsic drawback in this data, we did not find either survival benefit or net medical cost advantage by adding RT in adjuvant treatment.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Preventive Medicine and Public Health (예방의학교실) > 1. Journal Papers
Yonsei Authors
금기창(Keum, Ki Chang) ORCID logo https://orcid.org/0000-0003-4123-7998
금웅섭(Koom, Woong Sub) ORCID logo https://orcid.org/0000-0002-9435-7750
김효송(Kim, Hyo Song) ORCID logo https://orcid.org/0000-0002-0625-9828
박은철(Park, Eun-Cheol) ORCID logo https://orcid.org/0000-0002-2306-5398
신재용(Shin, Jae Yong)
장지석(Chang, Jee Suk Paul) ORCID logo https://orcid.org/0000-0001-7685-3382
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