Abstract
Background
In patients undergoing two-stage hepatectomy (TSH) for colorectal liver metastases (CRLM), chemotherapy is discontinued before portal vein occlusion and restarted after curative resection. Long chemotherapy-free intervals (CFI) may lead to tumor progression and poor oncological outcomes.
Objective
The aim of this study was to investigate the impact of the length of CFI on oncological outcome in patients undergoing TSH for CRLM.
Patients and Methods
Overall, 74 patients suffering from bilobar CRLM who underwent ALPPS (associating liver partition with portal vein ligation for staged hepatectomy; n = 43) or conventional TSH (n = 31) at two tertiary centers were investigated. The impact of CFI on long-term outcomes was analyzed by univariable and multivariable analysis.
Results
Preoperative chemotherapy was administered in 91 % (67/74) of patients, and chemotherapy was resumed postoperatively in 69 % (44/64) of patients who completed TSH. The use of postoperative chemotherapy was significantly associated with improved mean overall survival (36 ± 3 vs. 13 ± 3 months; p < 0.001). Overall, the median CFI from surgery to postoperative chemotherapy was 16 weeks (interquartile range 11–31) and was significantly shorter in the ALPPS group when compared with the conventional TSH group (10 vs. 21 weeks; p < 0.001). Multivariable analysis revealed a CFI ≤ 10 weeks as an independent factor associated with improved overall survival (p = 0.006) and disease-free survival (p = 0.010).
Conclusion
A short CFI is associated with improved oncological outcome in patients undergoing TSH for CRLM. Decreased interstage intervals after ALPPS may facilitate the timely resumption of chemotherapy.
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Funding
Mickael Lesurtel is supported by a professorship Grant from the Swiss National Science Foundation (PP00P3_128475).
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Kambakamba, P., Linecker, M., Alvarez, F.A. et al. Short Chemotherapy-Free Interval Improves Oncological Outcome in Patients Undergoing Two-Stage Hepatectomy for Colorectal Liver Metastases. Ann Surg Oncol 23, 3915–3923 (2016). https://doi.org/10.1245/s10434-016-5419-5
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DOI: https://doi.org/10.1245/s10434-016-5419-5