Which are classic risk factors for esophageal squamous cell carcinoma?

Which are classic risk factors for esophageal squamous cell carcinoma?

• A. Alcohol, tobacco, caustic injury, achalasia, nutritional deficiencies, HPV.
• B. Obesity, GERD, Barrett esophagus.
• C. H. pylori infection and NSAID use.
• D. Radiation exposure only.

Answer: (A)

Alcohol and tobacco are the strongest, most well-established risk factors for esophageal squamous cell carcinoma because they cause direct mucosal injury and promote carcinogenesis in the squamous lining. Caustic injury from ingestion and chronic irritation, together with conditions that cause stasis like achalasia, further increase risk by sustaining inflammation and mutagenic processes in the esophageal epithelium. Nutritional deficiencies, common in areas with limited diet variety, also predispose to squamous cancers by compromising mucosal defenses and repair. HPV has been found in some esophageal cancers, so it may contribute in certain populations, but it is not as consistently established as the other factors. In contrast, obesity, GERD, and Barrett esophagus are classic risk factors for esophageal adenocarcinoma, not squamous cell carcinoma. H. pylori infection and NSAID use are not recognized as classic risk factors for ESCC, and radiation exposure, while a possible risk in some contexts, is not the defining cluster of factors for this cancer type.

Alcohol and tobacco are the strongest, most well-established risk factors for esophageal squamous cell carcinoma because they cause direct mucosal injury and promote carcinogenesis in the squamous lining. Caustic injury from ingestion and chronic irritation, together with conditions that cause stasis like achalasia, further increase risk by sustaining inflammation and mutagenic processes in the esophageal epithelium. Nutritional deficiencies, common in areas with limited diet variety, also predispose to squamous cancers by compromising mucosal defenses and repair. HPV has been found in some esophageal cancers, so it may contribute in certain populations, but it is not as consistently established as the other factors.

In contrast, obesity, GERD, and Barrett esophagus are classic risk factors for esophageal adenocarcinoma, not squamous cell carcinoma. H. pylori infection and NSAID use are not recognized as classic risk factors for ESCC, and radiation exposure, while a possible risk in some contexts, is not the defining cluster of factors for this cancer type.