Utility of repeat colonoscopy within 1 year: a patient-level analysis

Area of Science:

• Gastroenterology
• Colorectal Cancer Screening

Background:

• Colorectal cancer screening colonoscopies are crucial for early detection.
• Previous studies using administrative data noted inconsistent repeat colonoscopy intervals.
• Patient-level details and reasons for early repeat colonoscopies were lacking.

Purpose of the Study:

• To retrospectively review repeat colonoscopies performed within one year of an index colonoscopy.
• To determine patient demographics, symptoms, and endoscopic findings associated with early repeat colonoscopies.

Main Methods:

• Retrospective review of 110 patient medical records.
• Analysis of colonoscopies performed at a tertiary care hospital-based endoscopy center.
• Inclusion criteria: repeat colonoscopy within 1 year of index colonoscopy.

Main Results:

• Repeat colonoscopies within 1 year were infrequent.
• Common indications included poor bowel preparation (35 patients) and history of colorectal cancer (11 patients).
• Polyps were found in 34 patients during index colonoscopies; 20 of these had 44 polyps on repeat.
• 11 patients with no polyps on index colonoscopy had new findings on repeat.

Conclusions:

• Repeat colonoscopies within one year are infrequent but clinically indicated.
• Reasons for repeat procedures include inadequate bowel preparation, polyp management, and new gastrointestinal symptoms.
• Early repeat colonoscopies are essential for accurate diagnosis and effective colorectal cancer screening.