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Radmard AR, Amouei M, Torabi A, Sima AR, Saffar H, Geahchan A, Davarpanah AH, Taouli B. MR Enterography in Ulcerative Colitis: Beyond Endoscopy. Radiographics 2024; 44:e230131. [PMID: 38127661 DOI: 10.1148/rg.230131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Ulcerative colitis (UC) is a chronic idiopathic inflammatory bowel disease (IBD) that progressively affects mucosa and submuccosa of the colon and rectum in a continual pattern. In comparison, Crohn disease (CD), the other type of IBD, is a chronic transmural inflammatory disorder that can involve any part of the gastrointestinal tract. MR enterography (MRE) has emerged as an important imaging modality for the diagnosis and detection of disease activity and complications in CD, with comparable results to those of endoscopy. But MRE has been underused for assessment of UC in recent years, and clinicians heavily rely on endoscopic findings for management of UC. Despite UC being considered an endoscopically assessable disease, MRE can provide useful information beyond that obtained with endoscopy about mural or extramural abnormalities, inaccessible parts of the colonic lumen, associated extraintestinal diseases, and superimposed pathologic conditions. Moreover, endoscopy might be contraindicated in some clinical settings due to the risk of colonic perforation. In addition to depicting the features of UC activity in different phases, MRE demonstrates findings of disease chronicity that cannot be achieved with endoscopy, particularly in a patient with colitis of unknown cause. The valuable diagnostic role of MRE to exclude undiagnosed CD in patients with UC who have refractory disease or those with postproctocolectomy complications is also emphasized. Radiologists can play a crucial role in the management of UC with MRE by addressing what is beyond endoscopy. ©RSNA, 2023 Test Your Knowledge questions are available in the supplemental material.
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Affiliation(s)
- Amir Reza Radmard
- From the Departments of Radiology (A.R.R., M.A., A.T.) and Pathology (H.S.), Shariati Hospital, Tehran University of Medical Sciences, North Kargar St, Tehran 14117, Iran; Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran (A.R.R., M.A., A.T.); Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran (A.R.S.); Sasan Alborz Biomedical Research Center, Masoud Gastroenterology and Hepatology Center, Tehran, Iran (A.R.S.); Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); and Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (A.H.D.)
| | - Mehrnam Amouei
- From the Departments of Radiology (A.R.R., M.A., A.T.) and Pathology (H.S.), Shariati Hospital, Tehran University of Medical Sciences, North Kargar St, Tehran 14117, Iran; Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran (A.R.R., M.A., A.T.); Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran (A.R.S.); Sasan Alborz Biomedical Research Center, Masoud Gastroenterology and Hepatology Center, Tehran, Iran (A.R.S.); Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); and Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (A.H.D.)
| | - Ala Torabi
- From the Departments of Radiology (A.R.R., M.A., A.T.) and Pathology (H.S.), Shariati Hospital, Tehran University of Medical Sciences, North Kargar St, Tehran 14117, Iran; Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran (A.R.R., M.A., A.T.); Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran (A.R.S.); Sasan Alborz Biomedical Research Center, Masoud Gastroenterology and Hepatology Center, Tehran, Iran (A.R.S.); Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); and Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (A.H.D.)
| | - Ali Reza Sima
- From the Departments of Radiology (A.R.R., M.A., A.T.) and Pathology (H.S.), Shariati Hospital, Tehran University of Medical Sciences, North Kargar St, Tehran 14117, Iran; Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran (A.R.R., M.A., A.T.); Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran (A.R.S.); Sasan Alborz Biomedical Research Center, Masoud Gastroenterology and Hepatology Center, Tehran, Iran (A.R.S.); Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); and Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (A.H.D.)
| | - Hiva Saffar
- From the Departments of Radiology (A.R.R., M.A., A.T.) and Pathology (H.S.), Shariati Hospital, Tehran University of Medical Sciences, North Kargar St, Tehran 14117, Iran; Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran (A.R.R., M.A., A.T.); Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran (A.R.S.); Sasan Alborz Biomedical Research Center, Masoud Gastroenterology and Hepatology Center, Tehran, Iran (A.R.S.); Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); and Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (A.H.D.)
| | - Amine Geahchan
- From the Departments of Radiology (A.R.R., M.A., A.T.) and Pathology (H.S.), Shariati Hospital, Tehran University of Medical Sciences, North Kargar St, Tehran 14117, Iran; Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran (A.R.R., M.A., A.T.); Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran (A.R.S.); Sasan Alborz Biomedical Research Center, Masoud Gastroenterology and Hepatology Center, Tehran, Iran (A.R.S.); Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); and Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (A.H.D.)
| | - Amir H Davarpanah
- From the Departments of Radiology (A.R.R., M.A., A.T.) and Pathology (H.S.), Shariati Hospital, Tehran University of Medical Sciences, North Kargar St, Tehran 14117, Iran; Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran (A.R.R., M.A., A.T.); Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran (A.R.S.); Sasan Alborz Biomedical Research Center, Masoud Gastroenterology and Hepatology Center, Tehran, Iran (A.R.S.); Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); and Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (A.H.D.)
| | - Bachir Taouli
- From the Departments of Radiology (A.R.R., M.A., A.T.) and Pathology (H.S.), Shariati Hospital, Tehran University of Medical Sciences, North Kargar St, Tehran 14117, Iran; Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran (A.R.R., M.A., A.T.); Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran (A.R.S.); Sasan Alborz Biomedical Research Center, Masoud Gastroenterology and Hepatology Center, Tehran, Iran (A.R.S.); Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY (A.G., B.T.); and Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (A.H.D.)
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Lawal SA, Voisin A, Olof H, Bording-Jorgensen M, Armstrong H. Diversity of the microbiota communities found in the various regions of the intestinal tract in healthy individuals and inflammatory bowel diseases. Front Immunol 2023; 14:1242242. [PMID: 38022505 PMCID: PMC10654633 DOI: 10.3389/fimmu.2023.1242242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/20/2023] [Indexed: 12/01/2023] Open
Abstract
The severe and chronic inflammatory bowel diseases (IBD), Crohn disease and ulcerative colitis, are characterized by persistent inflammation and gut damage. There is an increasing recognition that the gut microbiota plays a pivotal role in IBD development and progression. However, studies of the complete microbiota composition (bacteria, fungi, viruses) from precise locations within the gut remain limited. In particular, studies have focused primarily on the bacteriome, with available methods limiting evaluation of the mycobiome (fungi) and virome (virus). Furthermore, while the different segments of the small and large intestine display different functions (e.g., digestion, absorption, fermentation) and varying microenvironment features (e.g., pH, metabolites), little is known about the biogeography of the microbiota in different segments of the intestinal tract or how this differs in IBD. Here, we highlight evidence of the differing microbiota communities of the intestinal sub-organs in healthy and IBD, along with method summaries to improve future studies.
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Affiliation(s)
- Samuel Adefisoye Lawal
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
- Manitoba Centre for Proteomics and Systems Biology, University of Manitoba, Winnipeg, MB, Canada
- IBD Clinical and Research Centre, University of Manitoba, Winnipeg, MB, Canada
| | - Athalia Voisin
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
- Manitoba Centre for Proteomics and Systems Biology, University of Manitoba, Winnipeg, MB, Canada
- IBD Clinical and Research Centre, University of Manitoba, Winnipeg, MB, Canada
| | - Hana Olof
- Manitoba Centre for Proteomics and Systems Biology, University of Manitoba, Winnipeg, MB, Canada
- IBD Clinical and Research Centre, University of Manitoba, Winnipeg, MB, Canada
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada
| | | | - Heather Armstrong
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
- Manitoba Centre for Proteomics and Systems Biology, University of Manitoba, Winnipeg, MB, Canada
- IBD Clinical and Research Centre, University of Manitoba, Winnipeg, MB, Canada
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
- Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada
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