Background: This study aims to clarify which patients would benefit by surgery for pulmonary metastases from colorectal carcinoma.
Methods: A retrospective study was undertaken in 25 patients who had undergone complete resection. In all cases, prethoracotomy carcinoembryonic antigen (CEA) level was measured and mediastinal or hilar lymph nodes were histologically examined.
Results: Overall 5-year survival was 39.2%. The 5-year survival rate for patients with a normal CEA level was 61.1%, as compared with 19.0% for patients with an elevated CEA level (p = 0.0423). The 5-year survival rate for patients without a lymph node metastasis was 49.5%, as compared with 14.3% for patients with a lymph node metastasis (p = 0.0032). No lymph node metastasis was a predictor of longer survival by univariate and multivariate analyses. The primary site, disease-free interval, and number and size of the metastasis were not significant prognostic factors.
Conclusions: A resection for pulmonary metastasis from colorectal carcinoma is effective in patients with a normal CEA level and without a lymph node metastasis.
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