Are biopsies from endoscopically normal terminal ileum necessary?

Area of Science:

• Gastroenterology
• Histopathology
• Clinical Medicine

Background:

• The terminal ileum is routinely examined during colonoscopies, particularly for patients with inflammatory bowel disease (IBD) and diarrhea.
• The clinical utility of biopsies from endoscopically normal terminal ileum is uncertain and may increase costs and healthcare utilization.

Purpose of the Study:

• To determine if biopsy results from endoscopically normal terminal ileum impact clinical management.
• To assess the diagnostic and therapeutic utility of routine biopsies in this patient group.

Main Methods:

• Retrospective chart review of patients undergoing ileocolonoscopy with terminal ileum biopsy.
• Exclusion of patients with IBD, prior ileocecal resection, or abnormal endoscopic findings.
• Data collected from electronic medical records; statistical comparison using Pearson's chi-square test.

Main Results:

• 1018 patients identified; 299 met inclusion criteria.
• Abnormal biopsies occurred in 4.3% (13/299) of patients.
• Histologic abnormalities included chronic ileitis, acute ileitis, and amyloid deposition, primarily in patients with chronic diarrhea.

Conclusions:

• Clinically significant histologic abnormalities are rare in biopsies of endoscopically normal terminal ileum.
• Routine biopsy of normal-appearing terminal ileum offers limited diagnostic and therapeutic utility.
• Findings suggest routine biopsies may not be cost-effective or clinically beneficial.