J Gastric Cancer.  2018 Dec;18(4):328-338. 10.5230/jgc.2018.18.e38.

Epidemiology of Gastroesophageal Junction Adenocarcinoma in Korea

• Kim JJ

• KMID: 2429879
• DOI: http://doi.org/10.5230/jgc.2018.18.e38

Abstract

The incidence of gastroesophageal junction adenocarcinoma (GEJAC) in Western countries has increased in recent decades, in addition to a rise in the incidence of esophageal adenocarcinoma (EAC). Gastroesophageal reflux disease (GERD), obesity, smoking, alcohol consumption, and low Helicobacter pylori (HP) infection rate have been nominated as risk factors for such cancers. Among these risk factors, the increased prevalence of GERD and obesity and the decreased prevalence of HP infection are of special interest owing to the currently increasing prevalence of GEJAC in Western countries. Although similar trends in the prevalence of GERD, obesity, and HP infection are observed in Asian countries after a time lag from Western countries, it is still uncertain if the prevalence of GEJAC in Asian countries is increasing, especially in Korea. The incidence of GERD in Korea is currently increasing; it was below 3% in the 1990s. The incidence of obesity in the Korean population is increasing owing to the adoption of westernized lifestyles, including food preferences, and the HP infection rate in Korea is known to be decreasing. Therefore, based on logical extrapolation of observations of Western countries, the incidence of GEJAC will increase in Korea. However, the proportion of GEJAC among other upper gastrointestinal malignancies in Korea appears to be currently unchanged compared with that in the 1990s. Presently, there is a lack of epidemiologic studies on this issue in this region; therefore, more studies are needed to clarify the characteristics of these tumors and to improve clinical outcomes for patients with these tumors.

Keyword

Gastroesophageal junction adenocarcinoma; Prevalence; Risk factor; Asia; Korea

MeSH Terms

Adenocarcinoma*
Alcohol Drinking
Asia
Asian Continental Ancestry Group
Epidemiologic Studies
Epidemiology*
Esophagogastric Junction*
Food Preferences
Gastroesophageal Reflux
Helicobacter pylori
Humans
Incidence
Korea*
Life Style
Logic
Obesity
Prevalence
Risk Factors
Smoke
Smoking
Smoke

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