Abstract
The optimal timing of chemotherapy relative to resection of synchronous colorectal liver metastases (SCRLM) is not known. The objective of this retrospective multi-institutional study was to assess the influence of chemotherapy administered before and after hepatic resection on long-term outcomes among patients with initially resectable SCRLM treated from 1995 to 2005. Clinicopathologic data, treatments, and long-term outcomes from patients with initially resectable SCRLM who underwent partial hepatectomy at three hepatobiliary centers were reviewed. Four hundred ninety-nine consecutive patients underwent resection; 297 (59.5%) and 264 (52.9%) were treated with chemotherapy before and after resection. Chemotherapy strategies included pre-hepatectomy alone (n = 148, 24.7%), post-hepatectomy alone (n = 115, 23.0%), perioperative (n = 149, 29.0%), and no chemotherapy (n = 87, 17.4%). Male gender (p = 0.0029, HR = 1.41 [1.12–1.77]), node-positive primary tumor (p = 0.0046, HR = 1.40 [1.11–1.77]), four or more SCRLM (p = 0.0005, HR = 1.65 [1.24–2.18]), and post-hepatectomy chemotherapy treatment for 6 months or longer (p = 0.039, HR = 0.75 [0.57–0.99]) were associated with recurrence-free survival after discovery of SCRLM. Carcinoembryonic antigen >200 ng/ml (p = 0.0003, HR = 2.33 [1.48–3.69]), extrahepatic metastatic disease (p = 0.0025, HR = 2.34 [1.35–4.05]), four or more SCRLM (p = 0.033, HR = 1.43 [1.03–2.00]), and post-hepatectomy chemotherapy treatment for 2 months or longer (p < 0.0001, HR = 0.59 [0.45–0.76]) were associated with overall survival. Pre-hepatectomy chemotherapy was not associated with recurrence-free or overall survival. Patients treated with perioperative chemotherapy had similar outcomes as patients treated with post-hepatectomy chemotherapy only. We conclude that chemotherapy administered after but not before resection of SCRLM was associated with improved recurrence-free and overall survival. However, prospective randomized trials are needed to determine the optimal timing of chemotherapy.
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Reddy, S.K., Zorzi, D., Lum, Y.W. et al. Timing of Multimodality Therapy for Resectable Synchronous Colorectal Liver Metastases: A Retrospective Multi-Institutional Analysis. Ann Surg Oncol 16, 1809–1819 (2009). https://doi.org/10.1245/s10434-008-0181-y
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DOI: https://doi.org/10.1245/s10434-008-0181-y