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Di Rollo DG, McGovern J, Morton C, Miller G, Dolan R, Horgan PG, McMillan DC, Mansouri D. Relationship between BMI, CT-derived body composition and colorectal neoplasia in a bowel screening population. Scott Med J 2022; 67:93-102. [PMID: 35603880 PMCID: PMC9358305 DOI: 10.1177/00369330221102237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Introduction Obesity is associated with an increased risk of colorectal cancer (CRC).
Unlike the indirect measures such as BMI, CT-Body composition (CT-BC) allows
for the assessment of both volume and distribution of adipose tissue.
Therefore, the aim of this study was to examine the relationship between
host characteristics, BMI, CT-BC measurements and the incidence of
colorectal neoplasia. Methods Patients undergoing CT Colonography (CTC) as part of the Scottish Bowel
Screening Programme, between July 2009 and February 2016, were eligible for
inclusion. Data were collected including demographic data,
clinicopathological variables and CT-BC measurements including skeletal
muscle index (SMI), subcutaneous fat index (SFI) and visceral fat area
(VFA). CTC, colonoscopy, and pathology reports were used to identify CRC
incidence. Associations between demographic data, clinicopathological
variables, CT-BC measurements, colorectal neoplasia and advanced colorectal
neoplasia were analysed using univariate and multivariate binary logistics
regression. Results 286 patients met the inclusion criteria. Neoplasia was detected in 105 (37%)
of the patients with advanced neoplasia being detected in 72 (69%) of
patients. On multivariate analysis sex (p < 0.05) and high VFA
(p < 0.001) remained independently associated with colorectal neoplasia.
On multivariate analysis a high SFI (p < 0.01) remained independently
associated with advanced colorectal neoplasia. BMI was not associated with
either colorectal neoplasia or advanced colorectal neoplasia. Conclusion When directly compared to BMI, CT derived fat measurements were more closely
associated with the degree of neoplasia in patients undergoing colorectal
cancer screening. In patients investigated with CT colonography, CT adipose
measures may stratify the risk and grade of neoplasia.
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Affiliation(s)
- Domenic G. Di Rollo
- Academic Unit of Surgery, University of Glasgow, Royal Infirmary, Glasgow, G31 2ER, UK
| | - Josh McGovern
- Academic Unit of Surgery, University of Glasgow, Royal Infirmary, Glasgow, G31 2ER, UK
| | - Christopher Morton
- Academic Unit of Surgery, University of Glasgow, Royal Infirmary, Glasgow, G31 2ER, UK
| | - Gillian Miller
- Academic Unit of Surgery, University of Glasgow, Royal Infirmary, Glasgow, G31 2ER, UK
| | - Ross Dolan
- Academic Unit of Surgery, University of Glasgow, Royal Infirmary, Glasgow, G31 2ER, UK
| | - Paul G. Horgan
- Academic Unit of Surgery, University of Glasgow, Royal Infirmary, Glasgow, G31 2ER, UK
| | - Donald C. McMillan
- Academic Unit of Surgery, University of Glasgow, Royal Infirmary, Glasgow, G31 2ER, UK
| | - David Mansouri
- Academic Unit of Surgery, University of Glasgow, Royal Infirmary, Glasgow, G31 2ER, UK
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Ross FA, Park JH, Mansouri D, Little C, Di Rollo DG, Combet E, Van Wyk H, Horgan PG, McMillan DC, Roxburgh CSD. The role of faecal calprotectin in the identification of colorectal neoplasia in patients attending for screening colonoscopy. Colorectal Dis 2022; 24:188-196. [PMID: 34614299 DOI: 10.1111/codi.15942] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 08/12/2021] [Accepted: 09/27/2021] [Indexed: 12/29/2022]
Abstract
AIM Although the relationship between colorectal neoplasia and inflammation is well described, the role of faecal calprotectin (FC) in clinical practice to diagnose or screen patients for colorectal neoplasia is less defined. This prospective study characterizes the relationship between FC and colorectal neoplasia in patients within the faecal occult blood testing (FOBT) positive patients in the Scottish Bowel Screening Programme. METHODS All FOBT positive patients attending for colonoscopy between February 2016 and July 2017 were invited to participate. Patients provided a stool sample for FC before commencing bowel preparation. All demographics and endoscopic findings were collected prospectively. RESULTS In all, 352 patients were included. 210 patients had FC > 50 µg. Colorectal cancer (CRC) patients had a higher median FC (138.5 μg/g, P < 0.05), in comparison to those without CRC, and 13/14 had an FC > 50 µg/g (93%). FC had a high sensitivity (92.8%) and negative predictive value (99.3%) for CRC, but with a low specificity (41.7%) and positive predictive value (6.2%). FC sensitivity increased sequentially as neoplasms progressed from non-advanced to malignant neoplasia (48.6% non-advanced adenoma vs. 92.9% CRC). However, no significant relationship was observed between FC and non-cancer neoplasia. CONCLUSION In an FOBT positive screening population, FC was strongly associated with CRC (sensitivity 92.8%, specificity 41.7% for CRC, at 50 µg/g). However, although sensitive for the detection of CRC, FC failed to show sufficient sensitivity or specificity for the detection of non-cancer neoplasia. Based on these results we cannot recommend routine use of FC in a bowel screening population to detect cancer per se, but it is apparent that, with further optimization, faecal assessments including quantification of haemoglobin and inflammation could form part of a risk assessment tool aimed at refining the selection of patients for colonoscopy in both symptomatic and screening populations.
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Affiliation(s)
- Fiona A Ross
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - James H Park
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - David Mansouri
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - Cariss Little
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - Domenic G Di Rollo
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - Emilie Combet
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - Hester Van Wyk
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - Paul G Horgan
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - Donald C McMillan
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - Campbell S D Roxburgh
- Academic Unit of Surgery, School of Medicine, Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
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