Abstract
To evaluate the prognostic factors for patients who underwent curative resection of pulmonary metastases from colorectal cancer. The clinicopathological data of 60 patients with pulmonary metastases from colorectal carcinoma who underwent a radical pulmonary metastasectomy between February 1985 and December 2004 at the Cancer Hospital of Chinese Academy of Medical Sciences were retrospectively reviewed and analyzed. The overall 5-year survival rate was 43.7% after pulmonary excision and 74.0% after colorectal resection. Three factors were identified as significant by univariate log-rank test for overall survival after pulmonary resection, they were preoperative carcinoembryonic antigen, number of pulmonary metastases (solitary vs. multiple), and hilar and/or mediastinal lymph node metastases (P < 0.05). Multivariate analysis showed that number of pulmonary metastases (solitary vs. multiple) and hilar and/or mediastinal lymph node metastasis were independent prognostic factors. However, shorter disease-free interval and more number of pulmonary metastases predicted poor prognosis after primary colorectal resection. Pulmonary resection for metastases from colorectal cancer is safe and patients may get long-term survival in selected cases, especially in patients with a solitary pulmonary metastasis and without hilar and/or mediastinal lymph node metastasis.
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