Optimal Time of Initiating Adjuvant Chemotherapy After Curative Surgery in Colorectal Cancer Patients
강규민, 홍경숙, 노경태, 오보영, 정순섭, 이령아, 김광호,
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강규민 ( Kang Kyu-Min )
Ewha Womans University School of Medicine Department of Surgery
홍경숙 ( Hong Kyung-Sook )
Ewha Womans University School of Medicine Department of Surgery
노경태 ( Noh Gyoung-Tae )
Ewha Womans University School of Medicine Department of Surgery
오보영 ( Oh Bo-Young )
Ewha Womans University School of Medicine Department of Surgery
정순섭 ( Chung Soon-Sup )
Ewha Womans University School of Medicine Department of Surgery
이령아 ( Lee Ryung-Ah )
Ewha Womans University School of Medicine Department of Surgery
김광호 ( Kim Kwang-Ho )
Ewha Womans University School of Medicine Department of Surgery
KMID : 0356720130290040150
Abstract
Purpose: Adjuvant chemotherapy is routinely recommended for locally advanced colorectal cancer (CRC). There are very few data for the optimal starting date of adjuvant chemotherapy after the surgery. This study aimed to evaluate the effectiveness of earlier adoption of adjuvant chemotherapy after curative surgery for stage III CRC. Methods: In this study, 159 patients with stage III CRC, who had undergone a curative resection, were enrolled retrospectively. Patients were categorized into 3 groups representing different timings to initiate the chemotherapy; less than 2 weeks (group 1), 3 to 4 weeks (group 2), and more than 5 weeks (group 3). The overall survival rate (OS) and the relapse-free survival rate (RFS) were analyzed to evaluate the effectiveness of adjuvant chemotherapy. Results: The 5-year OSs of the patients were 73.7% in group 1, 67.0% in group 2, and 55.2% in group 3. The 5-year RFSs of the patients were 48.8% in group 1, 64.7% in group 2, and 57.1% in group 3. There were no significant differences in either the OS or the RFS (P = 0.200, P = 0.405). Conclusion: Starting chemotherapy earlier than 6 weeks after surgery does not show any significant difference. Thus, although adjuvant chemotherapy should preferably begin within 6 weeks, the starting date should not necessarily be hastened, and the patient’s general condition should be taken into consideration.
키워드
Adjuvant chemotherapy; Colorectal neoplasms; Prognosis; Therapeutic guidelines
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