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Accuracy of pelvic MRI in measuring tumor height in rectal cancer patients with or without preoperative chemoradiotherapy

 Eric Chung  ;  Dongwon Kang  ;  Hye Sun Lee  ;  Eun-Suk Cho  ;  Joo Hee Kim  ;  Eun Jung Park  ;  Seung Hyuk Baik  ;  Kang Young Lee  ;  Jeonghyun Kang 
 European Journal of Surgical Oncology, Vol.45(3) : 324-333, 2019 
Journal Title
 European Journal of Surgical Oncology 
Issue Date
Aged ; Antineoplastic Agents/therapeutic use* ; Chemoradiotherapy ; Colectomy/methods* ; Female ; Follow-Up Studies ; Humans ; Magnetic Resonance Imaging/methods* ; Male ; Neoplasm Staging/methods* ; Preoperative Care/methods* ; ROC Curve ; Rectal Neoplasms/diagnosis* ; Rectal Neoplasms/therapy ; Reproducibility of Results ; Retrospective Studies ; Sigmoidoscopy/methods
MRI ; Preoperative chemoradiotherapy Rectal cancer ; Rigid sigmoidoscopy ; Tumor height
INTRODUCTION: In measuring tumor height for rectal cancer, rigid sigmoidoscopy (RS) is a standard modality, and the accuracy of magnetic resonance imaging(MRI) in patients with/without preoperative chemoradiotherapy (CRT) has not been fully investigated. The aim of this study was to investigate the accuracy of MRI for measuring tumor height. MATERIALS AND METHODS: Among rectal cancer patients seen between July 2006 and May 2012, the initial group (RS and MRI available at initial diagnosis) and the post-CRT group (RS and MRI available after the completion of preoperative CRT) were selected. Intra-class correlation coefficient (ICC) comparison tests were performed between RS and MRI results for each group. RESULTS: Ninety-nine and 29 patients were allocated into the initial group and the post-CRT group, respectively. The tumor heights measured by RS and MRI demonstrated a positive relationship in the scatter plot (linear regression; R2 = 0.898; p < 0.001 in the initial group, R2 = 0.696; p < 0.001 in the post-CRT group). With respect to difference of absolute value (DAV) between RS and MRI, the overall mean and standard deviation of DAV were 10.9 ± 10 mm in the initial group and 8 ± 6 mm in the post-CRT group. ICC comparison analysis revealed that inter-rater agreement of RS and MRI in the initial group was significantly better than that of the post-CRT group [ICC (95% CI) 0.946 (0.919-0.963) vs. 0.823 (0.621-0.917); p = 0.004)]. CONCLUSIONS: MRI can be used as a viable option to measure tumor height in rectal cancer even in patients who have undergone preoperative CRT.
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1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
강정현(Kang, Jeonghyun) ORCID logo https://orcid.org/0000-0001-7311-6053
김주희(Kim, Joo Hee) ORCID logo https://orcid.org/0000-0001-5383-3602
박은정(Park, Eun Jung) ORCID logo https://orcid.org/0000-0002-4559-2690
백승혁(Baik, Seung Hyuk) ORCID logo https://orcid.org/0000-0003-4183-2332
이강영(Lee, Kang Young)
이혜선(Lee, Hye Sun) ORCID logo https://orcid.org/0000-0001-6328-6948
조은석(Cho, Eun Suk)
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