Inflammatory bowel disease and colonic disorders

Author(s):  
Thomas Marjot

This chapter covers core curriculum topics relating to inflammatory bowel disease (IBD) and colonic disorders. A diagnostic approach to IBD is covered including the role of imaging, endoscopy, histopathology and clinical features. Pathophysiology and epidemiology of IBD is detailed. Management of Ulcerative colitis and Crohn’s disease includes assessment of disease severity, imaging modalities and therapeutic management. Particular focus is given to therapeutic drug monitoring and indications for biologic therapies. Surgical management of IBD is broadly covered including indications, timing and approach. Coverage is also given to the diagnosis and management of extra-intestinal manifestations of IBD, IBD in special situations (pregnancy, elderly, transition) and the prevention of cancer in IBD. Colorectal cancer and benign conditions including constipation, functional gut disorders and other colitides are also featured.

2020 ◽  
Vol 14 (Supplement_1) ◽  
pp. S659-S659
Author(s):  
F Khan ◽  
W Czuber-Dochan ◽  
C Norton

Abstract Background Inflammatory bowel disease (IBD) increases the risk of colorectal cancer (CRC) and requires specialised cancer risk management. Although literature exists on general disease-related knowledge in IBD patients, limited studies have assessed IBD patients’ knowledge of CRC risk and its management. Consequently, patient perception of the role of a healthcare provider (HCP) in patient education of CRC risk and their attitude towards recommended risk management has not been assessed in UK IBD patients. Methods We conducted a cross-sectional online survey with IBD patients recruited via charity sources from April-July 2019. Adult patients (>18 years) with a confirmed diagnosis of IBD for 2 years and adequate command of English language were included. A self-designed and piloted questionnaire with open and closed-ended questions was used. Closed-ended data were analysed using descriptive statistics and open-ended responses were analysed using content analysis. Fischer’s exact test and bivariate logistic regression were used to test for association between knowledge and patient demographics. Results 92 participants, including 52.5% CD and 67.5% females, responded. 88% knew that IBD increases CRC risk. The mean fear of CRC risk (0–10 visual analogue scale) was 6.37 (SD ± 2.8). One-fifth were aware of colonoscopy as the best screening tool; 88% were unaware of screening initiation time. 90% would agree to their doctor’s recommendation of colonoscopy to ensure early cancer diagnosis and treatment. For dysplasia with 10% risk of CRC, 46.7% would not agree to colectomy mainly due to 10% risk of CRC not being high enough to undergo surgery. Forty-eight per cent of participants said that they never had a discussion about increased CRC risk in IBD with their doctor. Almost two-thirds were not informed about the role of screening/surveillance in cancer. Two-thirds were satisfied with the information provided by their HCP. Overall, patients desired more information about their individualised cancer risk and services available for managing the increased risk. Conclusion IBD patients are well informed about IBD-associated CRC risk, feared this risk greatly but were poorly aware of screening initiation time. HCP’s role in cancer knowledge dissemination was sub-optimal and patients desired more knowledge. We need deeper understanding of patients’ educational needs related to CRC.


2019 ◽  
Vol 65 (1) ◽  
pp. 111-118
Author(s):  
Kristin E. Burke ◽  
Jennifer Nayor ◽  
Emily J. Campbell ◽  
Ashwin N. Ananthakrishnan ◽  
Hamed Khalili ◽  
...  

2012 ◽  
Vol 18 (10 Supplement) ◽  
pp. B68-B68
Author(s):  
Michael W. Scaeffer ◽  
Amosy E. M'Koma ◽  
Joan C. Smith ◽  
Billy R. Ballard ◽  
Seeley H. Erin ◽  
...  

2012 ◽  
Author(s):  
Michael W. Schaffer ◽  
Joan C. Smith ◽  
Erin H. Seeley ◽  
Jeremy L. Norris ◽  
Billy R. Ballard ◽  
...  

2004 ◽  
Vol 287 (1) ◽  
pp. G7-G17 ◽  
Author(s):  
Steven H. Itzkowitz ◽  
Xianyang Yio

Patients with ulcerative colitis and Crohn's disease are at increased risk for developing colorectal cancer. To date, no known genetic basis has been identified to explain colorectal cancer predisposition in these inflammatory bowel diseases. Instead, it is assumed that chronic inflammation is what causes cancer. This is supported by the fact that colon cancer risk increases with longer duration of colitis, greater anatomic extent of colitis, the concomitant presence of other inflammatory manifestations such as primary sclerosing cholangitis, and the fact that certain drugs used to treat inflammation, such as 5-aminosalicylates and steroids, may prevent the development of colorectal cancer. The major carcinogenic pathways that lead to sporadic colorectal cancer, namely chromosomal instability, microsatellite instability, and hypermethylation, also occur in colitis-associated colorectal cancers. Unlike normal colonic mucosa, however, inflamed colonic mucosa demonstrates abnormalities in these molecular pathways even before any histological evidence of dysplasia or cancer. Whereas the reasons for this are unknown, oxidative stress likely plays a role. Reactive oxygen and nitrogen species produced by inflammatory cells can interact with key genes involved in carcinogenic pathways such as p53, DNA mismatch repair genes, and even DNA base excision-repair genes. Other factors such as NF-κB and cyclooxygenases may also contribute. Administering agents that cause colitis in healthy rodents or genetically engineered cancer-prone mice accelerates the development of colorectal cancer. Mice genetically prone to inflammatory bowel disease also develop colorectal cancer especially in the presence of bacterial colonization. These observations offer compelling support for the role of inflammation in colon carcinogenesis.


2021 ◽  
Vol 12 ◽  
Author(s):  
Marianna Lucafò ◽  
Debora Curci ◽  
Martina Franzin ◽  
Giuliana Decorti ◽  
Gabriele Stocco

Increased risk of colorectal cancer (CRC) in inflammatory bowel disease (IBD) patients has been attributed to long-standing chronic inflammation, with the contribution of genetic alterations and environmental factors such as the microbiota. Moreover, accumulating data indicate that IBD-associated CRC (IBD-CRC) may initiate and develop through a pathway of tumorigenesis distinct from that of sporadic CRC. This mini-review summarizes the current knowledge of IBD-CRC, focusing on the main mechanisms underlying its pathogenesis, and on the important role of immunomodulators and biologics used to treat IBD patients in interfering with the inflammatory process involved in carcinogenesis.


2012 ◽  
Author(s):  
Laura A. Franklin ◽  
Joan C. Smith ◽  
Billy R. Ballard ◽  
Erin H. Seeley ◽  
Mary K. Washington ◽  
...  

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