J Breast Cancer.  2018 Mar;21(1):1-10. 10.4048/jbc.2018.21.1.1.

Basic Findings Regarding Breast Cancer in Korea in 2015: Data from a Breast Cancer Registry

Affiliations
  • 1Department of Surgery, Research Institute of Clinical Medicine, Chonbuk National University Hospital, Chonbuk National University and Biomedical Research Institute, Jeonju, Korea. yhj0903@jbnu.ac.kr
  • 2Department of Surgery, Chosun University Hospital, Chosun University College of Medicine, Gwangju, Korea.
  • 3Department of Surgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea.
  • 4Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Busan, Korea.
  • 5Division of Breast and Endocrine Surgery, Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
  • 6The Korea Central Cancer Registry, Division of Cancer Registration and Surveillance, National Cancer Center, Goyang, Korea.

Abstract

The Korean Breast Cancer Society (KBCS) has established a nationwide breast cancer database using an online registration program in 1996. The present study aimed to analyze the basic findings and trends of breast cancer in Korea in 2015 using the data provided by the Korea Central Cancer Registry and the KBCS. In 2015, a total of 22,550 patients were newly diagnosed with breast cancer, of which 3,331 were carcinoma in situ cases and 19,219 were invasive cancer cases. The incidence rate of breast cancer in Korea has steadily increased since the nationwide database was established, and the crude rate and age-standardized rate including that of carcinoma in situ, were 88.1 and 66.0 cases per 100,000 women, respectively. In terms of age, the incidence of breast cancer was the highest in the 40-49-year-old age group (7,889 patients, 35.0%). With regard to surgical procedure, breast-conserving surgery was frequently performed (62.3%). However, the rate of mastectomy has been gradually increasing since 2012, that is, from 32.3% in 2014 to 36.1% in 2015. The rate of early breast cancer has continued to increase, and that of stages III and IV breast cancer was only 9.1% at the time of diagnosis. However, the 5-year survival rate of patients with carcinoma in situ from 2011 to 2015 was 92.3%, which was 14.4% higher than that from 1993 to 1995 (77.9%). Analysis of data from the nationwide registry of breast cancer will not only help to understand the characteristics of breast cancer in individuals in Korea, but will also significantly contribute to the treatment and research of breast cancer. Therefore, a high quality database for breast cancer in Korea must be established by further initiating registration project and establishing an objective legal basis.

Keyword

Breast neoplasms; Epidemiology; Registries

MeSH Terms

Breast Neoplasms*
Breast*
Carcinoma in Situ
Diagnosis
Epidemiology
Female
Humans
Incidence
Korea*
Mastectomy
Mastectomy, Segmental
Registries
Survival Rate
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