Publications by authors named "Kyu-Won Jung"
Purpose: This study investigated epidemiologic features of patients with pancreatic cancer in Korea, according to the histologic subtypes.
Methods: The Korea Central Cancer Registry data on patients with pancreatic cancer from 1999 to 2019 were reviewed. The 101,446 patients with pancreatic cancer (C25 based on the International Classification of Diseases, 10th revision) were allocated according to the following morphological codes: A, endocrine; B, carcinoma excluding cystic and mucinous; C, cystic or mucinous; D, acinar cell; and E, sarcoma and soft tissue tumor.
Article Synopsis
- The Korean Breast Cancer Society (KBCS) has been collecting breast cancer data since 1996 to analyze clinical characteristics, with a focus on statistics from 2021.
- In 2021, 34,628 women were diagnosed, predominantly in the 40-49 age group, with the majority having hormone receptor-positive, HER2-negative subtypes.
- Despite a decline in breast cancer screenings during the COVID-19 pandemic, early-stage cases rose significantly, leading to improved overall survival rates thanks to better diagnoses and treatment advancements.
Objective: Low-dose computed tomography screening reduces lung cancer and overall mortality, but the participation rate remains low. The objective of this study was to develop a decision aid (DA) that addresses the overabundance of healthcare options and barriers to participation in lung cancer screening (LCS) among the general population aged 40-79 years in Korea.
Materials And Methods: The DA was developed by following the International Patient Decision Aid Standards process.
This study assessed survival for lung cancer patients meeting criteria for the National Lung Cancer Screening Program in Korea launched in 2019 and updated guideline reported by the US Preventive Service Task Force (USPSTF). We assessed all-cause mortality based on the Korean Lung Cancer Registry (KLCR), including lung cancer patients diagnosed in 2014-2016. We compared survival among lung cancer patients eligible for extended USPSTF criteria (age 50-80 years and ≥ 20 pack-years) and those meeting current criteria (age 54-74 years and ≥ 30 pack-years, current or within the past 15 years).
View Article and Find Full Text PDFBackground: The overall survival rates among cancer patients have been improving. However, the increase in survival is not uniform across socioeconomic status. Thus, we investigated income disparities in the 5-year survival rate (5YSR) in cancer patients and the temporal trends.
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- The study examined trends in cancer incidence and regional disparities for eight common cancer types in Korea from 1999 to 2020 using data from the Korea Central Cancer Registry.
- It found that while stomach and liver cancer incidences decreased along with their regional disparities, colorectal and prostate cancer incidences fluctuated, with prostate cancer showing a recent increase.
- The research highlights the need for further investigation into the factors influencing these trends and potential strategies to reduce both overall cancer incidence and regional differences.
Article Synopsis
- Hepatocellular carcinoma (HCC) is a significant health issue in South Korea, with over 10,500 new cases reported annually, making cancer registries essential for tracking incidence and outcomes.
- The Korea Central Cancer Registry (KCCR), established in 1999, collects comprehensive cancer data but previously lacked detailed staging and treatment information for HCC.
- Since 2010, the KCCR, partnered with the Korean Liver Cancer Association (KLCA), has adopted a detailed data collection approach involving random sampling of cases to improve data accuracy and support cancer control efforts.
Purpose: This study aimed to report the projected cancer incidence and mortality for the year 2024 to estimate Korea's current cancer burden.
Materials And Methods: Cancer incidence data from 1999 to 2021 were obtained from the Korea National Cancer Incidence Database, and cancer mortality data from 1993 to 2022 were acquired from Statistics Korea. Cancer incidence and mortality were projected by fitting a linear regression model to observed age-specific cancer rates against their respective years and multiplying the projected age-specific rates by the anticipated age-specific population for 2024.
Purpose: The current study provides national cancer statistics and their secular trends in Korea, including incidence, mortality, survival, and prevalence in 2021.
Materials And Methods: Incidence, survival, and prevalence rates of cancer were calculated using the Korea National Cancer Incidence Database, from 1999 to 2021, with survival follow-up until December 31, 2022. Deaths from cancer were assessed using causes-of-death data obtained from Statistics Korea.
Article Synopsis
- The study focuses on primary CNS tumors (PCNSTs) in South Korea, highlighting their significant impact on cancer mortality and the need for accurate epidemiologic data.
- In 2020, over 15,500 new cases of PCNSTs were reported, showing an increase in glioblastoma and lymphoma diagnoses, linked to the aging population.
- The findings stress the importance of teamwork in addressing the rising challenges of PCNST incidence related to demographic changes.
Background: Recent nationwide studies of disparities in cancer incidence by income are scarce in Korea. This study investigated such disparities in cancer incidence and the stage at cancer diagnosis across income groups in Korea.
Methods: This study utilized data from a national cancer database, specifically focusing on cases recorded in the year 2018.
The objective of this study is to investigate the correlation between the neighborhood deprivation index and survival rates of cancer patients in Korea. In this study, 5-year age-standardized survival rates of patients with cancer were determined using the National Cancer Cohort from 2014 to 2018 in Korea. The primary cancer sites were the stomach, colorectum, liver, lung, breast, cervix, prostate, and thyroid.
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- The Global Breast Cancer Initiative (GBCI), launched by WHO in 2023, focuses on improving early detection and management of breast cancer across 21 Asian countries.
- A study investigated data availability for key performance indicators (KPIs) like stage at diagnosis and treatment completion by reviewing literature and national cancer reports.
- Findings showed that only 57% of countries published relevant national cancer statistics, with significant differences from WHO estimates, and highlighted a strong link between early diagnosis, survival rates, and universal health coverage.
Background: Adjusted prognostic information is important for treatment decisions, especially in elderly patients or survivors of exocrine pancreatic cancer (EPC). This study aims to investigate conditional relative survival (CS) rates and conditional probabilities of death in patients with EPC.
Methods: Data of 77,975 individuals diagnosed with EPC between 1999 and 2019 were obtained from the Korea Central Cancer Registry.
Objective: To investigate the incidence, trends, and survival rates of all gynecologic cancers using the Korea Central Cancer Registry (KCCR) database from 1999-2019.
Methods: Gynecologic cancer data were obtained from the KCCR database between 1999 and 2019. Age-standardized incidence rates (ASRs), annual percentage changes, and average annual percentage changes (AAPCs) were calculated.
Objectives: This study investigated regional disparities in the incidence of 8 major cancers at the municipal level in Korea during 1999-2018 and evaluated the presence or absence of hot spots of cancer clusters during 2014-2018.
Methods: The Korea National Cancer Incidence Database was used. Age-standardized incidence rates were calculated by gender and region at the municipal level for 4 periods of 5 years and 8 cancer types.
Article Synopsis
- The article presents annual updates on breast cancer statistics in Korea, showing that 29,729 women were newly diagnosed in 2019, with an increase in incidence since 2002.
- Of the diagnoses, 83.5% were invasive carcinomas, with the median age of diagnosis being 52.8 years; the highest prevalence was among women aged 40-49.
- Notably, early-stage breast cancer cases (stages 0 and I) represent 61.6%, and the 5-year relative survival rate improved to 93.6% for patients diagnosed from 2015 to 2019.
Background: The Korea National Cancer Screening Program (KNCSP) offers upper endoscopy or upper gastrointestinal series (UGIS) biannually for people aged ≥ 40 years. This study aimed to assess the effect of negative screening results on the incidence of and mortality from upper gastrointestinal (GI) cancer.
Methods: A population-based retrospective cohort of 15,850,288 men and women was constructed using data from 3 national databases.
Purpose: The current study provides national cancer statistics and their secular trends in Korea, including incidence, mortality, survival, and prevalence in 2020.
Materials And Methods: Incidence, survival, and prevalence rates of cancer were calculated using the Korea National Cancer Incidence Database, from 1999 to 2020, with survival follow-up until December 31, 2021. Deaths from cancer were assessed using causes-of-death data obtained from Statistics Korea.
Purpose: This study aimed to report the projected cancer incidence and mortality for the year 2023 to estimate Korea's current cancer burden.
Materials And Methods: Cancer incidence data from 1999 to 2020 were obtained from the Korea National Cancer Incidence Database, and cancer mortality data from 1993 to 2021 were acquired from Statistics Korea. Cancer incidence and mortality were projected by fitting a linear regression model to observed age-specific cancer rates against their respective years and then by multiplying the projected age-specific rates by the anticipated age-specific population for 2023.
Objective: To investigate the incidence and survival rates of primary uterine carcinosarcoma (UCS) in Korea.
Methods: From the Korea Central Cancer Registry, we identified patients diagnosed with primary UCS between 1999 and 2018 and collected their information, including age at diagnosis, Surveillance, Epidemiology, and End Results (SEER) summary stage, and treatment. Age-standardized incidence rates (ASRs) and annual percent changes (APCs) were calculated.
Objectives: This study investigated the effect of mammography screening on the long-term survival of breast cancer (BC) patients aged 40 years or older according to their screening history and duration since screening.
Methods: The study cohort was organized from 3 nationwide databases of the Korean National Cancer Screening Program, the Korean Central Cancer Registry, and death certificates. We included 24,387 women diagnosed with invasive BC or ductal carcinoma in situ in 2008 and 2009 and followed up until December 31, 2019.
Objectives: This study aimed to investigate the effect of cervical cancer screening by Papanicolaou (Pap) smears on the long-term survival of cervical cancer patients.
Methods: We constructed a retrospective cohort of 14,903 women diagnosed with invasive cancer or carcinoma in situ in 2008 and 2009 and followed up until December 31, 2019, by using individual-level data from 3 national databases of the Korean National Cancer Screening Program, the Korean Central Cancer Registry, and death certificates. Cox proportional-hazards regression was used to investigate the effect of cervical cancer screening on mortality.
This study investigated the trends of gastric cancer in Korea by adding the latest updated gastric cancer data from 2019. Gastric cancer incidence between 1999 and 2019 was reviewed using data from the Korea Central Cancer Registry. The study period was divided into 3 periods: period I (1999-2005), period II (2006-2012), and period III (2013-2019).
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