Colon Cancer Screening Methods: 2023 Update

Area of Science:

• Oncology
• Gastroenterology
• Preventive Medicine

Background:

• Colorectal cancer (CRC) is a leading cause of cancer-related death globally.
• Early detection through screening significantly improves patient outcomes and survival rates.
• National guidelines recommend CRC screening for average-risk individuals starting at age 45.

Purpose of the Study:

• To provide a comprehensive overview of current colorectal cancer screening modalities.
• To highlight the benefits and limitations associated with each screening option.
• To discuss the role of biomarkers in CRC detection and recurrence assessment.

Main Methods:

• Systematic review of existing literature on CRC screening tests.
• Comparative analysis of various screening modalities including stool-based tests, radiologic imaging, and endoscopic procedures.
• Evaluation of biomarker utility in CRC management.

Main Results:

• Multiple screening options exist, including fecal occult blood test (FOBT), fecal immunochemical test (FIT), FIT-DNA, computed tomographic colonography (CTC), flexible sigmoidoscopy (FS), colonoscopy, and colon capsule endoscopy (CCE).
• Each modality possesses varying sensitivity and specificity for detecting colorectal neoplasia.
• Biomarkers show promise in assessing CRC recurrence.

Conclusions:

• The choice of CRC screening modality should be individualized based on patient risk factors, test characteristics, and accessibility.
• Continued research is needed to optimize screening strategies and develop novel detection methods.
• Effective CRC screening programs are essential for reducing cancer morbidity and mortality.