Abstract
Pulmonary metastasectomy has come to be recognized as an effective treatment for selected patients with some malignancies. On the other hand, the role of pulmonary metastasectomy for gastric cancer is still unknown. Metastasectomy is rarely indicated in cases of pulmonary metastasis from gastric cancer, because in most cases, the metastasis occurs in the form of lymphangitic carcinomatosis and the lesions are numerous. The purpose of this study was to determine the surgical outcomes and prognostic factors for survival after pulmonary metastasectomy. From 1985 to 2012, 10 patients underwent pulmonary metastasectomy for gastric cancer at Saitama Cancer Center, Japan. The overall survival rate was examined by the Kaplan-Meier method and univariate analysis was carried out to identify prognostic factors. The overall 3-year survival rate was 30.0 %. The median follow-up period was 26.8 months (range, 6.5-96.6) after the pulmonary metastasectomy. Univariate analysis revealed an advanced pathological stage of the gastric cancer and occurrence of extrapulmonary metastasis before the pulmonary metastasectomy as unfavorable prognostic factors. Pulmonary metastasectomy should be considered in selected patients with lung metastasis from gastric cancer. An advanced pathological stage of gastric cancer and occurrence of extrapulmonary metastasis before the pulmonary metastasectomy are unfavorable prognostic factors.
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