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Updated: Oct 27, 2025

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
Published on: August 26, 2014
Villous atrophy, an endoscopic and diagnostic challenge
Andres Gómez-Aldana1, Diana Carolina Gómez2, Rocío Del Pilar López-Panqueva3
1Endoscopia y Trasplantes, Fundación Santa Fe de Bogotá, Canada.
This case study highlights a patient with chronic diarrhea and weight loss, potentially linked to rheumatoid arthritis treatment. Further investigation into lymphocytic infiltration is crucial for effective management.
Area of Science:
- Gastroenterology
- Rheumatology
- Immunology
Background:
- A 57-year-old female with a five-year history of chronic non-bloody diarrhea (10-20 depositions/day) and significant weight loss (25 kg).
- History of rheumatoid arthritis treated with rituximab for six years.
- Previous treatments including rifaximin, cholestyramine, and loperamide were ineffective.
Observation:
- Endoscopic and histological examinations consistently revealed lymphocytic infiltration in the gastrointestinal tract.
- Absence of abdominal cramping despite severe diarrhea.
Findings:
- The persistent lymphocytic infiltration suggests an underlying inflammatory or autoimmune process.
- The patient's condition did not respond to standard treatments for diarrhea.
Implications:
- This case underscores the importance of considering drug-induced side effects or immune-mediated conditions in patients with chronic diarrhea.
- Further research is needed to elucidate the link between rituximab, rheumatoid arthritis, and lymphocytic colitis.
- Exploring alternative therapeutic strategies targeting the immune response may be beneficial.
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