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08.02.2020 | Review – Cancer Research | Ausgabe 3/2020 Open Access

Journal of Cancer Research and Clinical Oncology 3/2020

Peri-operative chemotherapy for resectable colorectal lung metastasis: a systematic review and meta-analysis

Journal of Cancer Research and Clinical Oncology > Ausgabe 3/2020
Yuting Li, You Qin
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The online version of this article (https://​doi.​org/​10.​1007/​s00432-020-03142-9) contains supplementary material, which is available to authorized users.

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Several studies have evaluated surgical resection of pulmonary metastases as a standard treatment option for colorectal cancer (CRC) patients with resectable pulmonary metastases. However, the role of peri-operative chemotherapy after complete resection of pulmonary metastases from CRC patients is still controversial. This systematic review and meta-analysis is aimed to investigate the clinical efficacy of peri-operative chemotherapy after resection of CRC pulmonary metastases.


PubMed, the Cochrane Library databases, and Embase were searched for studies evaluating the effect of peri-operative chemotherapy on the survival of patients with CRC after pulmonary metastasectomy. The hazard ratio (HR) was used for analyzing overall survival (OS) and progression-free survival (PFS)/recurrence-free survival (RFS)/disease-free survival (DFS).


Eight studies were included in the final analysis. The outcome showed that peri-operative chemotherapy had a significant favourable effect on OS (HR 0.83, 95% CI 0.75–0.92, p < 0.05) and PFS/RFS/DFS (HR 0.67, 95% CI 0.53–0.86, p < 0.05) in patients who received pulmonary metastasectomy. Multivariate analysis also validated this result (OS: HR 0.56, 95% CI 0.36–0.86, p < 0.05; PFS/RFS/DFS: HR 0.64, 95% CI 0.46–0.87, p < 0.05). There was a significant benefit in peri-operative group on OS and PFS/RFS/DFS in studies with R0 resection of pulmonary metastases (OS: HR 0.72, 95% CI 0.53–0.97, p < 0.05; PFS/RFS/DFS: HR 0.72, 95% CI 0.54–0.95, p < 0.05) and metachronous pulmonary metastases (OS: HR 0.40, 95% CI 0.22–0.75, p < 0.05; PFS/RFS/DFS: HR 0.67, 95% CI 0.49–0.92, p < 0.05).


Our meta-analysis demonstrated a significant difference in favor of peri-operative chemotherapy in CRC patients who underwent resection of pulmonary metastases. More clinical data and studies are needed to validate the findings of our study.

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