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학술저널
저자정보
Kim, Tae Gyu (Department of Radiation Oncology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine) Park, Won (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) Choi, Doo Ho (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) Park, Hee Chul (Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine) Kim, Seok-Hyung (Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine) Cho, Yong Beom (Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine) Yun, Seong Hyen (Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine) Kim, Hee Cheol (Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine) Lee, Woo Yong (Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine) Lee, Jeeyun (Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine) Park, Joon Oh (Department of Interna) Park, Young Suk
저널정보
대한방사선종양학회 Radiation oncology journal : ROJ Radiation oncology journal : ROJ 제35권 제3호
발행연도
2017.1
수록면
217 - 226 (10page)

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Purpose: Hematotoxicity following anti-cancer treatment is known to be related to treatment efficacy in several malignancies. The purpose of this study was to examine the hematologic parameters related to the tumor response and survival in patients treated with curative surgery following preoperative chemoradiotherapy (CRT) for rectal cancer. Materials and Methods: Four hundred eighteen patients with rectal cancer who underwent preoperative CRT and curative surgery were analyzed, retrospectively. The main clinical factors and blood cell counts before and after CRT were investigated with respect to their relationships with tumor downstaging and patient survival. Results: The post-CRT leukocyte count was significantly different between the tumor downstaging group and the non-downstaging group (median, 4740/uL vs. 5130/uL; p = 0.013). Multivariate analysis showed that histological grade, circumferential extent, and post-CRT leukocyte count were related to tumor downstaging. In addition, histological grade, post-CRT leukocyte count, and tumor downstaging were related to disease-free survival. The 5-year disease-free survival and overall survival in patients with post-CRT leukocyte count ${\leq}3730/uL$, which is the cut-off value derived from the receiver operation characteristic (ROC) curve analysis, were significantly higher than those with higher counts (88.0% vs. 71.6%, p = 0.001; 94.4% vs. 84.1%, p = 0.024). Conclusion: Post-CRT leukocyte count of ${\leq}3730/uL$ could be regarded as a good prognostic factor for tumor response and survival in rectal cancer patients treated with preoperative CRT.

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