Which of the following are significant risk factors for esophageal adenocarcinoma?

Which of the following are significant risk factors for esophageal adenocarcinoma?

• A. Obesity and GERD
• B. Smoking and alcohol use
• C. H. pylori infection
• D. Chronic pancreatitis

Answer: (A)

Long-standing reflux of stomach acid damages the distal esophagus and drives a sequence from reflux-induced injury to Barrett’s esophagus, then to dysplasia and eventually adenocarcinoma. Obesity amplifies this risk both by increasing reflux through higher intra-abdominal pressure and by creating a pro-inflammatory, insulin-resistant state that can promote carcinogenesis. Together, these factors—frequent gastroesophageal reflux and obesity—are the strongest, most well-established risk factors for esophageal adenocarcinoma. In contrast, smoking and alcohol are more strongly linked to other esophageal cancer types, particularly squamous cell carcinoma, and their association with esophageal adenocarcinoma is weaker. H. pylori infection can decrease acid production and may be inversely related to esophageal adenocarcinoma risk in some studies, not a risk factor. Chronic pancreatitis is not a known risk factor for this cancer.

Long-standing reflux of stomach acid damages the distal esophagus and drives a sequence from reflux-induced injury to Barrett’s esophagus, then to dysplasia and eventually adenocarcinoma. Obesity amplifies this risk both by increasing reflux through higher intra-abdominal pressure and by creating a pro-inflammatory, insulin-resistant state that can promote carcinogenesis. Together, these factors—frequent gastroesophageal reflux and obesity—are the strongest, most well-established risk factors for esophageal adenocarcinoma.

In contrast, smoking and alcohol are more strongly linked to other esophageal cancer types, particularly squamous cell carcinoma, and their association with esophageal adenocarcinoma is weaker. H. pylori infection can decrease acid production and may be inversely related to esophageal adenocarcinoma risk in some studies, not a risk factor. Chronic pancreatitis is not a known risk factor for this cancer.