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자료유형
학술저널
저자정보
송지형 (인제대학교) 박요한 (인제대학교) 서상혁 (인제대학교) 이안복 (인제대학교) 김광희 (인제대학교) 안민성 (인제대학교) 배기범 (인제대학교) 홍관희 (인제대학교) 황진원 (인제대학교) 김지현 (인제대학교) 정현석 (인제대학교) 안기정 (인제대학교)
저널정보
대한대장항문학회 Annals of Coloproctology Annals of Coloproctolgy Vol.33 No.6
발행연도
2017.1
수록면
219 - 226 (8page)

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Purpose: This study was conducted to discover the clinical factors that can predict pathologically complete remission (pCR) after neoadjuvant chemoradiotherapy (CRT), so that those factors may help in deciding on a treatment program for patients with locally advanced rectal cancer. Methods: A total of 137 patients with locally advanced rectal cancer were retrospectively enrolled in this study, and data were collected retrospectively. The patients had undergone a total mesorectal excision after neoadjuvant CRT. Histologic response was categorized as pCR vs. non-pCR. The tumor area was defined as (tumor length) × (maximum tumor depth). The difference in tumor area was defined as pre-CRT tumor area – post-CRT tumor area. Univariate and multivariate logistic regression analyses were conducted to find the factors affecting pCR. A P-value < 0.05 was considered significant. Results: Twenty-three patients (16.8%) achieved pCR. On the univariate analysis, endoscopic tumor circumferential rate <50%, low pre-CRT T & N stage, low post-CRT T & N stage, small pretreatment tumor area, and large difference in tumor area before and after neoadjuvant CRT were predictive factors of pCR. A multivariate analysis found that only the difference in tumor area before and after neoadjuvant CRT was an independent predictor of pCR (P < 0.001). Conclusion: The difference in tumor area, as determined using radiologic tools, before and after neoadjuvant CRT may be important predictor of pCR. This clinical factor may help surgeons to determine which patients who received neoadjuvant CRT for locally advanced rectal cancer should undergo surgery.

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