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Updated: Aug 22, 2025

Investigating the Alleviating Effects of Bacillus cereus Administration on Colitis through Gut Microbiota Modulation
Published on: July 27, 2022
[Lymphocytic colitis caused by medicine ingredient modification]
Sato Namura1, Saori Matsui2, Risa Matsuoka2
1Clinical Education Center, Yodogawa Christian Hospital.
Abstract:
A 49-year-old woman was referred to our hospital for further evaluation and treatment of diarrhea. Colonoscopic findings revealed indistinct vascular patterns and extensive edema in a colon segment, and white granular mucosa and crack-like appearance in the sigmoid colon and rectum. She was diagnosed with lymphocytic colitis (LC) based on lymphocytic infiltration into the epithelium on histopathological examination. Diarrhea symptoms resolved after long-term medication withdrawal. This medicine's composition was changed 4 years ago and this modification possibly triggered LC.
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