Abstract
Purpose
Video-assisted thoracoscopic surgery (VATS) is widely used in thoracic surgery and increasingly applied to pulmonary metastasectomy. The purpose of this study was to identify prognostic factors of patients undergoing VATS pulmonary metastasectomy from colorectal cancer (CRC).
Methods
Between January 2005 and June 2015, a total of 154 patients underwent VATS pulmonary metastasectomy from CRC. Patient demographic data and characteristics of the primary tumor and pulmonary metastasis were analyzed to identify factors significantly correlated with prognosis.
Results
The median follow-up period after pulmonary resection was 37 months. The cumulative 5-year overall survival rate after VATS pulmonary metastasectomy from CRC was 71.3%. History of metastasis to other sites (p = 0.035), status of mediastinal lymph nodes (p < 0.001), and preoperative carcinoembryonic antigen (CEA) level (p = 0.013) were identified as independent prognostic factors. Subgroup analysis with a combination of these three independent prognostic factors revealed 5-year OS rates of 91.0, 70.0, 30.3, and 0.0% for patients with zero, one, two, and three risk factors, respectively. Other factors, such as sex, disease-free interval, T stage of primary tumor, and status of lymph node near the primary tumor, were not significantly associated with prognosis.
Conclusion
VATS pulmonary metastasectomy is efficacious for patients with CRC pulmonary metastases. History of metastasis to other sites, status of mediastinal lymph nodes, and preoperative CEA level were identified as independent prognostic factors. The number of risk factors significantly influenced patient survival.
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Acknowledgements
This study is supported by the Natural Science Foundation of Shanghai, China (Grant No. 14ZR1406000), and the National Natural Science Foundation of China (Grant Nos. 81472225, 81401875). We would like to thank International Science Editing Co. for editing the language.
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The study protocol was approved by the Ethics Committee of Zhongshan Hospital, Fudan University, Shanghai, China (approval no. B2016-189). Written informed consent was obtained from all patients for use of surgical samples and clinical information for medical research.
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Fenghao Sun and Li Chen contributed equally to this work.
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Sun, F., Chen, L., Shi, M. et al. Prognosis of video-assisted thoracoscopic pulmonary metastasectomy in patients with colorectal cancer lung metastases: an analysis of 154 cases. Int J Colorectal Dis 32, 897–905 (2017). https://doi.org/10.1007/s00384-017-2768-x
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DOI: https://doi.org/10.1007/s00384-017-2768-x