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OBJECTIVE: Previous studies have demonstrated survival benefits for local treatment in solitary metastatic non-small cell lung cancer(NSCLC).This study aimed to investigate the effect of local surgery for NSCLC with pulmonary oligometastasis.
METHODS: This study included 21 patients of NSCLC with pulmonary oligometastasis between January 2003 and December 2013,which were divided into two groups,group A(11 cases) for surgery,group B(10 cases)for systematic chemotherapy,compared the median survival time(MST),5-year survival rate between the two groups,and analyzed the impact of pathological types,TNM and pN stage of primary tumor, the site,mode and number of oligometastatic nodule on group A.
RESULTS: MST of the two groups were 37 months and 11.6 months respectively,five-year survival rates were 18.2% and 9.1% respectively(P<0.05).Patients with single nodule, metachronous metastases, primary tumor of pN0, TNM stage Ior II obtained higher survival rate than those with multiple nodules, simultaneous, pN1-2, stage III or IV in group A(P<0.05).There was no significant survival time difference among pathological types of primary tumor and oligometastatic site(P>0.05).
CONCLUSIONS: Local surgical treatment significantly prolonged the overall survival time and 5-year survival rate of primary NSCLC with pulmonary oligometastasis.