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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/18291

Title: Endoscopic Versus Radiology-Based Location of Rectal Cancer
Authors: Meylemans, D.
Penninckx, F.
Vanbeckevoort, D.
Wolthuis, A. M.
FIEUWS, Steffen
D'Hoore, A.
Issue Date: 2014
Citation: ACTA CHIRURGICA BELGICA, 114 (6), p. 364-369
Abstract: Background : Rigid proctosigmoidoscopy is recommended for measuring the height of rectal neoplasms but appears to be performed in only a minority of patients. Our aim was to compare endoscopic and radiological measurement of rectal tumour location with a focus on differentiation between mid and high rectal cancer. Methods : Medical records of 66 rectal cancer patients were reviewed. Tumour location defined at colonoscopy (66 patients), rigid proctosigmoidoscopy (20 patients) and endorectal ultrasound (35 patients) was recorded. Rectilinear and curvilinear methods were used to estimate the distance between the lower tumour level and the anal verge on sagittal CT or MR images (66 patients). Agreement, intra- and inter-observer variation of radiology-based measurements were assessed using intra-class correlation (ICC) and within-subject coefficient of variation (WSCV). Results : Tumour location was performed at rigid proctosigmoidoscopy in 30% of patients. Intra- and inter-observer agreement for radiology-based measurements were high. Tumour location using the rectilinear method or proctosigmoidoscopy was similar on average, for a difference of only 0.34 cm (SD 2.0cm, p = 0.330), although agreement was moderate (ICC = 0.54, WSCV = 16.7%). Measurements based on colonoscopy and the curvilinear radiological method were characterized by a systematic overestimation of the location, increasing with tumour height. Conclusions : Radiology-based measurement of the lower tumour level is a reproducible alternative for tumour location at rigid or flexible endoscopy. Its validity should be further assessed.
Notes: [Meylemans, D.; Penninckx, F.; Wolthuis, A. M.; D'Hoore, A.] Univ Hosp Gasthuisberg, Dept Abdominal Surg, B-3000 Leuven, Belgium. [Vanbeckevoort, D.] Univ Hosp Gasthuisberg, Dept Radiol, Leuven, Belgium. [Fieuws, S.] Katholieke Univ Leuven, I Biostat, Leuven, Belgium. [Fieuws, S.] Univ Hasselt, Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/18291
ISI #: 000347511600002
ISSN: 0001-5458
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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