Degree of Creeping Fat Assessed by Computed Tomography Enterography is Associated with Intestinal Fibrotic Stricture in Patients with Crohn's Disease: A Potentially Novel Mesenteric Creeping Fat Index

Emerging evidence points to a link between creeping fat and the pathogenesis of Crohn's disease [CD]. Non-invasive assessment of the severity of creeping fat on cross-sectional imaging modality has seldom been investigated. This study aimed to develop and characterize a novel mesenteric creepin...

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Veröffentlicht in:Journal of Crohn's and colitis 2021-07, Vol.15 (7), p.1161-1173
Hauptverfasser: Li, Xue-Hua, Feng, Shi-Ting, Cao, Qing-Hua, Coffey, J Calvin, Baker, Mark E, Huang, Li, Fang, Zhuang-Nian, Qiu, Yun, Lu, Bao-Lan, Chen, Zhi-Hui, Li, Yi, Bettenworth, Dominik, Iacucci, Marietta, Sun, Can-Hui, Ghosh, Subrata, Rieder, Florian, Chen, Min-Hu, Li, Zi-Ping, Mao, Ren
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container_end_page 1173
container_issue 7
container_start_page 1161
container_title Journal of Crohn's and colitis
container_volume 15
creator Li, Xue-Hua
Feng, Shi-Ting
Cao, Qing-Hua
Coffey, J Calvin
Baker, Mark E
Huang, Li
Fang, Zhuang-Nian
Qiu, Yun
Lu, Bao-Lan
Chen, Zhi-Hui
Li, Yi
Bettenworth, Dominik
Iacucci, Marietta
Sun, Can-Hui
Ghosh, Subrata
Rieder, Florian
Chen, Min-Hu
Li, Zi-Ping
Mao, Ren
description Emerging evidence points to a link between creeping fat and the pathogenesis of Crohn's disease [CD]. Non-invasive assessment of the severity of creeping fat on cross-sectional imaging modality has seldom been investigated. This study aimed to develop and characterize a novel mesenteric creeping fat index [MCFI] based on computed tomography [CT] in CD patients. MCFI was developed based on vascular findings on CT in a retrospective cohort [n = 91] and validated in a prospective cohort [n = 30]. The severity of creeping fat was graded based on the extent to which mesenteric fat extended around the intestinal circumference using the vessels in the fat as a marker. The accuracy of MCFI was assessed by comparing it with the degree of creeping fat observed in surgical specimens. The relationship between MCFI and fibrostenosis was characterized by determining if these correlated. The accuracy of MCFI was compared with other radiographic indices [i.e. visceral to subcutaneous fat area ratio and fibrofatty proliferation score]. In the retrospective cohort, MCFI had moderate accuracy in differentiating moderate-severe from mild fibrostenosis (area under the receiver operating characteristic [ROC] curve [AUC] = 0.799; p = 0.000). ROC analysis in the retrospective cohort identified a threshold MCFI of > 3 which accurately differentiated fibrostenosis severity in the prospective cohort [AUC = 0.756; p = 0.018]. An excellent correlation was shown between MCFI and the extent of fat wrapping in specimens in the prospective cohort [r = 0.840, p = 0.000]. Neither visceral to subcutaneous fat area ratio nor fibrofatty proliferation score correlated well with the degree of intestinal fibrosis. MCFI can accurately characterize the extent of mesenteric fat wrapping in surgical specimens. It may become another non-invasive measure of CD fibrostenosis.
doi_str_mv 10.1093/ecco-jcc/jjab005
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Non-invasive assessment of the severity of creeping fat on cross-sectional imaging modality has seldom been investigated. This study aimed to develop and characterize a novel mesenteric creeping fat index [MCFI] based on computed tomography [CT] in CD patients. MCFI was developed based on vascular findings on CT in a retrospective cohort [n = 91] and validated in a prospective cohort [n = 30]. The severity of creeping fat was graded based on the extent to which mesenteric fat extended around the intestinal circumference using the vessels in the fat as a marker. The accuracy of MCFI was assessed by comparing it with the degree of creeping fat observed in surgical specimens. The relationship between MCFI and fibrostenosis was characterized by determining if these correlated. The accuracy of MCFI was compared with other radiographic indices [i.e. visceral to subcutaneous fat area ratio and fibrofatty proliferation score]. In the retrospective cohort, MCFI had moderate accuracy in differentiating moderate-severe from mild fibrostenosis (area under the receiver operating characteristic [ROC] curve [AUC] = 0.799; p = 0.000). ROC analysis in the retrospective cohort identified a threshold MCFI of &gt; 3 which accurately differentiated fibrostenosis severity in the prospective cohort [AUC = 0.756; p = 0.018]. An excellent correlation was shown between MCFI and the extent of fat wrapping in specimens in the prospective cohort [r = 0.840, p = 0.000]. Neither visceral to subcutaneous fat area ratio nor fibrofatty proliferation score correlated well with the degree of intestinal fibrosis. MCFI can accurately characterize the extent of mesenteric fat wrapping in surgical specimens. It may become another non-invasive measure of CD fibrostenosis.</description><identifier>ISSN: 1873-9946</identifier><identifier>EISSN: 1876-4479</identifier><identifier>DOI: 10.1093/ecco-jcc/jjab005</identifier><identifier>PMID: 33411893</identifier><language>eng</language><publisher>England: Oxford University Press</publisher><subject>Adipose Tissue - diagnostic imaging ; Adipose Tissue - pathology ; Adult ; Constriction, Pathologic - diagnostic imaging ; Constriction, Pathologic - pathology ; Crohn Disease - diagnostic imaging ; Crohn Disease - pathology ; Cross-Sectional Studies ; Female ; Fibrosis - diagnostic imaging ; Fibrosis - pathology ; Humans ; Male ; Original ; Prospective Studies ; Retrospective Studies ; Severity of Illness Index ; Tomography, X-Ray Computed - methods</subject><ispartof>Journal of Crohn's and colitis, 2021-07, Vol.15 (7), p.1161-1173</ispartof><rights>The Author(s) 2021. Published by Oxford University Press on behalf of European Crohn’s and Colitis Organisation. All rights reserved. For permissions, please email: journals.permissions@oup.com.</rights><rights>The Author(s) 2021. Published by Oxford University Press on behalf of European Crohn’s and Colitis Organisation. All rights reserved. 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Non-invasive assessment of the severity of creeping fat on cross-sectional imaging modality has seldom been investigated. This study aimed to develop and characterize a novel mesenteric creeping fat index [MCFI] based on computed tomography [CT] in CD patients. MCFI was developed based on vascular findings on CT in a retrospective cohort [n = 91] and validated in a prospective cohort [n = 30]. The severity of creeping fat was graded based on the extent to which mesenteric fat extended around the intestinal circumference using the vessels in the fat as a marker. The accuracy of MCFI was assessed by comparing it with the degree of creeping fat observed in surgical specimens. The relationship between MCFI and fibrostenosis was characterized by determining if these correlated. The accuracy of MCFI was compared with other radiographic indices [i.e. visceral to subcutaneous fat area ratio and fibrofatty proliferation score]. 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Non-invasive assessment of the severity of creeping fat on cross-sectional imaging modality has seldom been investigated. This study aimed to develop and characterize a novel mesenteric creeping fat index [MCFI] based on computed tomography [CT] in CD patients. MCFI was developed based on vascular findings on CT in a retrospective cohort [n = 91] and validated in a prospective cohort [n = 30]. The severity of creeping fat was graded based on the extent to which mesenteric fat extended around the intestinal circumference using the vessels in the fat as a marker. The accuracy of MCFI was assessed by comparing it with the degree of creeping fat observed in surgical specimens. The relationship between MCFI and fibrostenosis was characterized by determining if these correlated. The accuracy of MCFI was compared with other radiographic indices [i.e. visceral to subcutaneous fat area ratio and fibrofatty proliferation score]. In the retrospective cohort, MCFI had moderate accuracy in differentiating moderate-severe from mild fibrostenosis (area under the receiver operating characteristic [ROC] curve [AUC] = 0.799; p = 0.000). ROC analysis in the retrospective cohort identified a threshold MCFI of &gt; 3 which accurately differentiated fibrostenosis severity in the prospective cohort [AUC = 0.756; p = 0.018]. An excellent correlation was shown between MCFI and the extent of fat wrapping in specimens in the prospective cohort [r = 0.840, p = 0.000]. Neither visceral to subcutaneous fat area ratio nor fibrofatty proliferation score correlated well with the degree of intestinal fibrosis. MCFI can accurately characterize the extent of mesenteric fat wrapping in surgical specimens. It may become another non-invasive measure of CD fibrostenosis.</abstract><cop>England</cop><pub>Oxford University Press</pub><pmid>33411893</pmid><doi>10.1093/ecco-jcc/jjab005</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0002-7476-2644</orcidid><oa>free_for_read</oa></addata></record>
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subjects Adipose Tissue - diagnostic imaging
Adipose Tissue - pathology
Adult
Constriction, Pathologic - diagnostic imaging
Constriction, Pathologic - pathology
Crohn Disease - diagnostic imaging
Crohn Disease - pathology
Cross-Sectional Studies
Female
Fibrosis - diagnostic imaging
Fibrosis - pathology
Humans
Male
Original
Prospective Studies
Retrospective Studies
Severity of Illness Index
Tomography, X-Ray Computed - methods
title Degree of Creeping Fat Assessed by Computed Tomography Enterography is Associated with Intestinal Fibrotic Stricture in Patients with Crohn's Disease: A Potentially Novel Mesenteric Creeping Fat Index
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