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转移灶局部治疗生存曲线（Log-rank检验）。A：局部治疗部位：未行局部治疗、单部位与多部位局部治疗（P < 0.01）；B：局部治疗时机：未行局部治疗、被动与主动性局部治疗（P < 0.01）
Survival curves of local treatment of metastases (Log-rank test). A: Local treatment site: none, single-site and multiple-site local treatment of metastases (P < 0.01); B: Local treatment timing: none, passive and initiative local treatment of metastases (P < 0.01)
