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08:40
Chronic Salmonella Infection Induced Intestinal Fibrosis
Published on: September 22, 2019
Cancer in inflammatory bowel disease
Jianlin Xie1, Steven H Itzkowitz
1GI Division, Mount Sinai School of Medicine, One Gustave Levy Place, New York City, NY 10029, USA.
World Journal of Gastroenterology
|January 18, 2008
Summary
Patients with inflammatory bowel disease (IBD) face higher colorectal cancer (CRC) risks. Regular colonoscopies and biopsies are crucial for early detection and management of dysplasia in IBD patients.
Area of Science:
- Gastroenterology
- Oncology
- Molecular Biology
Background:
- Patients with long-standing inflammatory bowel disease (IBD) have an elevated risk of developing colorectal cancer (CRC).
- Molecular alterations like chromosomal instability, microsatellite instability, and hypermethylation are implicated in both sporadic CRC and colitis-associated colon carcinogenesis.
- Risk factors for CRC in IBD include disease duration, extent, primary sclerosing cholangitis, family history, and inflammation severity.
Purpose of the Study:
- To review the risk factors, chemoprevention strategies, and surveillance methods for colorectal cancer in patients with inflammatory bowel disease.
- To discuss the risk of small bowel adenocarcinoma in Crohn's disease and dysplasia in ileal pouches.
- To highlight the role of endoscopic and molecular screening in refining surveillance guidelines.
Main Methods:
- Review of existing literature on IBD, CRC, and associated molecular pathways.
- Analysis of risk factors contributing to colitis-associated colon carcinogenesis.
- Evaluation of current chemoprevention and surveillance strategies, including colonoscopy and biopsy.
Main Results:
- CRC risk in IBD correlates with disease duration, extent, PSC, family history, and inflammation.
- Chemoprevention options include aminosalicylates, ursodeoxycholic acid, folic acid, and statins.
- Colonoscopic surveillance with random biopsies is key for detecting dysplasia; proctocolectomy may be indicated.
- Small intestinal Crohn's disease increases small bowel adenocarcinoma risk; ileal pouches have low dysplasia risk but require monitoring.
Conclusions:
- Effective management of IBD-associated CRC relies on understanding risk factors and implementing timely surveillance.
- Early detection of dysplasia through colonoscopy is critical for preventing CRC progression in IBD patients.
- Advancements in endoscopic and molecular screening hold promise for improving surveillance protocols and understanding disease progression.
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