No decrease in the rate of early or missed colorectal cancers after colonoscopy with polypectomy over a 10-year...

Area of Science:

• Gastroenterology
• Oncology
• Public Health

Background:

• Assessing trends in missed or early colorectal cancers (CRCs) is crucial for improving screening efficacy.
• Previous studies have not definitively established whether the rate of missed or early CRCs has changed over time.

Purpose of the Study:

• To compare the incidence of missed or early colorectal cancers (CRCs) detected after polypectomy between 1996 and 2006.
• To identify specific risk factors associated with missed or early CRCs.

Main Methods:

• A population-based, case-control study was conducted, linking Dutch Pathology Registry and Netherlands Cancer Registry data.
• Patients diagnosed with CRC in 1996 or 2006 were analyzed for preceding colonic histology within 6 to 36 months prior to diagnosis.
• Multivariate logistic regression was employed to determine factors linked to missed or early CRCs.

Main Results:

• The proportion of missed or early CRCs increased from 1.7% in 1996 to 2.3% in 2006 (P=.012).
• Missed or early CRCs were more frequently located in the right colon and transverse colon/splenic flexure (ORs 2.34 and 2.14, respectively).
• Male sex was also associated with an increased risk of missed or early CRCs (OR 1.31).

Conclusions:

• Analysis of the Dutch population indicates no reduction in missed or early colorectal cancer (CRC) occurrence over a 10-year period.
• Right-sided colon location emerged as an independent risk factor for missed or early CRCs, highlighting potential areas for improved surveillance.