Colonoscopy for intermittent rectal bleeding: impact on patient management

Area of Science:

• Gastroenterology
• Colorectal Surgery
• Diagnostic Endoscopy

Background:

• Rectal bleeding is a common symptom with diverse causes, ranging from benign anorectal conditions to serious gastrointestinal pathology.
• Full colonic evaluation is often recommended for intermittent bright red rectal bleeding due to its potential as a warning sign.

Purpose of the Study:

• To assess the diagnostic utility of colonoscopy in evaluating patients presenting with intermittent bright red rectal bleeding.
• To determine the rate of significant gastrointestinal findings during colonoscopy in this patient group.

Main Methods:

• Prospective data collection of 125 colonoscopies performed over two years.
• Focus on 33 patients undergoing colonoscopy specifically for intermittent bright red rectal bleeding.
• Analysis of findings in relation to rectal examination results.

Main Results:

• Colonoscopy revealed significant pathology in 79% (26/33) of patients.
• Common findings included polyps (14 patients), cancer (3 patients), diverticula (9 patients), and hemorrhoids (4 patients).
• Rectal examination findings did not correlate with endoscopic results; 52% of patients with normal rectal exams had abnormal colonoscopies.

Conclusions:

• Colonoscopy is highly effective in evaluating intermittent rectal bleeding, detecting significant pathology irrespective of rectal exam findings.
• Full colonic evaluation via colonoscopy is crucial for patients with intermittent rectal bleeding to identify concomitant gastrointestinal issues.
• Findings at colonoscopy led to a change in management for 48% of patients.