The association between cecal insertion time and colorectal neoplasm detection.

Area of Science:

• Gastroenterology
• Endoscopy
• Colorectal Cancer Screening

Background:

• Limited data exists on the impact of cecal insertion time on colorectal neoplasm detection.
• Colonoscopy screening is crucial for early detection of colorectal neoplasms.

Purpose of the Study:

• To determine the association between cecal insertion time and colorectal neoplasm detection rates.
• To investigate if insertion time influences the detection of various colorectal lesion types.

Main Methods:

• A cross-sectional study of 12,679 screening colonoscopies was conducted.
• Fixed effects logistic regression, conditioned on colonoscopist, was used to control for confounding factors.

Main Results:

• Overall colorectal neoplasm detection rates decreased with longer cecal insertion times (36.8% to 31.0%).
• Detection odds for small adenomas (<5 mm) were 16% lower in the longest vs. shortest insertion time quartiles.
• Insertion time was not significantly associated with detecting larger adenomas or advanced lesions.

Conclusions:

• Shorter cecal insertion times correlate with improved detection of small colorectal adenomas.
• Cecal insertion time is a potentially significant factor in colonoscopy quality, impacting early lesion detection and progression prevention.