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Related Experiment Videos

Colonic mucosal abnormalities associated with oral sodium phosphate solution

F R Zwas1, N W Cirillo, H B el-Serag

  • 1Greenwich Hospital, Yale University, Connecticut, USA.

Gastrointestinal Endoscopy
|May 1, 1996
PubMed
Summary
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Oral sodium phosphate (NaP) bowel prep can cause aphthoid-like erosions, mimicking Crohn's disease. Researchers recommend avoiding NaP in patients with suspected inflammatory bowel disease (IBD) due to potential misdiagnosis.

Area of Science:

  • Gastroenterology
  • Endoscopy
  • Colorectal disease

Background:

  • Oral sodium phosphate (NaP) is a common colon cleansing agent for colonoscopy.
  • While generally safe and effective, NaP has been linked to mucosal abnormalities.
  • This study investigated if bowel preparations cause colonic mucosal changes resembling inflammatory bowel disease (IBD).

Purpose of the Study:

  • To assess if common colonoscopy bowel cleansing preparations are associated with colonic mucosal changes.
  • To determine if these changes mimic inflammatory bowel disease (IBD).

Main Methods:

  • A controlled study randomized 97 patients undergoing colonoscopy.
  • Patients received either polyethylene glycol-based lavage (PEG-ELS) or NaP solution.
  • Gastroenterologists were blinded to the preparation type; mucosal abnormalities were documented and biopsied.

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Main Results:

  • Nonspecific aphthoid-like erosions were observed in 14 patients (14.4%).
  • These lesions, resembling Crohn's disease, were not friable and biopsies were not indicative of IBD.
  • NaP was associated with these lesions in 24.5% of patients, versus 2.3% for PEG-ELS.

Conclusions:

  • Aphthoid-like mucosal lesions frequently occur after NaP bowel preparation.
  • These lesions can be mistaken for IBD, particularly Crohn's disease.
  • NaP is not recommended for patients with chronic diarrhea or suspected IBD to prevent misdiagnosis.