[Collagenous colitis (author's transl)]

Area of Science:

• Gastroenterology
• Pathology

Background:

• Collagenous colitis is characterized by subepithelial collagen deposits in the colon.
• Endoscopic findings are often normal or show mild edema, with chronic watery diarrhea as the main symptom.

Observation:

• Two additional cases of collagenous colitis were identified using endoscopic, histological, and electron microscopic methods.
• One patient experienced diarrhea concurrently with H2 receptor antagonist use.
• Elevated serum pancreatic polypeptide (PP) was noted in one patient without evidence of a pancreatic tumor.

Findings:

• The study identified two new cases of collagenous colitis, expanding the known occurrences of this condition.
• A potential association between H2 receptor antagonist use and collagenous colitis symptoms was observed.
• Increased serum pancreatic polypeptide levels were detected in one patient, warranting further investigation.

Implications:

• These findings contribute to the understanding of collagenous colitis etiology and presentation.
• The potential role of H2 receptor antagonists and pancreatic polypeptide in collagenous colitis requires further research.
• This study highlights the importance of comprehensive diagnostic approaches for collagenous colitis.