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[A case of pseudomembranous colitis in a juvenile rheumatoid arthritis patient taking methotrexate]
Ji Han Yu1, Na Young Kim, Hae Min Lee
1Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
Abstract:
Pseudomembranous colitis is mainly caused by antibiotics and Clostridium difficile infection. But conditions such as gastrointestinal surgery, antacid medication, anti-neoplastic agent or immunosuppressive agent which influences the normal flora of colon can induce colitis without the administration of any antibiotics. We experienced a 13 year-old male who was taking low-dose methotrexate for juvenile rheumatoid arthritis complained diarrhea and abdominal pain for 3 weeks. Sigmoidoscopic findings revealed diffuse patch yellowish pseudomembranes on the rectum. Histologic finding was compatible to pseudomembranous colitis. His symptom was improved after stop taking methotrexate and the administration of metronidazole. If a patient treated with immunosuppressive agents or antineoplastic agents complains diarrhea, fever or abdominal pain and has not improved with conservative care, pseudomembranous colitis should be taken into account as a differential diagnosis and prompt treatment is required for better prognosis.
Insights
Pseudomembranous colitis can occur without antibiotics, triggered by factors like immunosuppressive drugs. Early diagnosis and treatment are crucial for better patient outcomes.
Area of Science:
- Gastroenterology
- Immunology
Background:
- Pseudomembranous colitis is typically linked to antibiotics and Clostridium difficile.
- However, other factors like immunosuppressive agents can disrupt gut flora and induce colitis.
Observation:
- A 13-year-old male on methotrexate for juvenile rheumatoid arthritis presented with diarrhea and abdominal pain.
- Sigmoidoscopy revealed pseudomembranes in the rectum, confirmed by histology.
Findings:
- Methotrexate cessation and metronidazole treatment led to symptom improvement.
- This case highlights non-antibiotic-induced pseudomembranous colitis.
Implications:
- Consider pseudomembranous colitis in patients on immunosuppressants or antineoplastics with persistent gastrointestinal symptoms.
- Prompt diagnosis and treatment are vital for improved prognosis in these cases.
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