Diagnosis
Table 3. Frequently Asked Questions from Patients to
Enhance Colonoscopy Quality
Questions for colonoscopists to help ensure a high-quality examination:
1. What is your adenoma detection rate?
▶ It should be ≥25% overall or ≥30% for male patients and ≥20% for female patients.
2. What is your cecal intubation rate?
▶ It should be ≥95% for screening colonoscopies and ≥90% overall.
3. Do you use split-dosing of bowel preparations?
▶ Effective bowel preparation requires that at least half the preparation be ingested on
the day of the colonoscopy.
Checks of the endoscopy report aer the procedure:
1. Does the report include photographs of the end of the colon, including the appendiceal
orifice and ileocecal valve/terminal ileum?
▶ This demonstrates that the full extent of the colon was examined.
2. Is the bowel preparation quality described?
▶ This will reveal if preparation was adequate to ensure effective examination.
Table 4. USMSTF Ranking of Current Colorectal Cancer
Screening Tests
Tier 1:
• Colonoscopy every 10 years
• Annual fecal immunochemical test
Tier 2:
• CT colonography every 5 years
• FIT–fecal DNA every 3 years
• Flexible sigmoidoscopy every 10 years (or every 5 years)
Tier 3:
• Capsule colonoscopy every 5 years
Available tests not currently recommended:
• Septin 9
