Screening for oesophageal cancer

Area of Science:

• Gastroenterology
• Oncology
• Diagnostic Medicine

Background:

• Esophageal cancer presents a significant global health challenge, often diagnosed at advanced stages, leading to high mortality rates.
• Preneoplastic conditions such as Barrett's esophagus and dysplasia precede esophageal adenocarcinoma and squamous-cell carcinoma, respectively.
• Early detection of these preneoplastic lesions offers a substantial opportunity to reduce mortality and morbidity.

Purpose of the Study:

• To evaluate the potential of screening programs for early detection of esophageal preneoplastic lesions.
• To weigh the risks and benefits of various screening strategies for individuals and society.
• To explore advancements in diagnostic accuracy for esophageal cancer screening.

Main Methods:

• Review of current screening modalities, including invasive endoscopy and less invasive non-endoscopic cell-sampling methods.
• Assessment of the diagnostic accuracy, sensitivity, and specificity of cytological assessment.
• Exploration of biomarker analysis in conjunction with pan-esophageal cell-collection devices.

Main Results:

• Endoscopic screening is associated with invasiveness, high costs, and potential for diagnostic errors due to sampling bias and subjective interpretation.
• Non-endoscopic methods are more cost-effective and less invasive but have shown disappointing sensitivity and specificity for cytological atypia.
• Biomarker analysis of cell samples holds promise for improving diagnostic accuracy, though further research is needed.

Conclusions:

• Careful consideration of the risks, benefits, psychological, and economic implications is necessary for implementing esophageal cancer screening programs.
• Advancements in non-endoscopic methods and biomarker utilization are crucial for enhancing the effectiveness and feasibility of early detection.
• Further research is required to validate novel diagnostic approaches and optimize screening strategies for esophageal cancer.