恶性肿瘤经血行途径发生肺转移常为病程已达晚期的表现,这类病人往往在一年内死亡。但其中有些病人的肺转移灶为单个,或虽有数个转移灶,但均局限在一侧肺内。在原发肿瘤获得根治,身体其他部位又未发现另有转移灶的病例,如对肺转移病变采取积极的外科治疗,不少病人仍可望获得长期生存。 The occurrence of lung metastases in malignant tumors through the blood pathway is often a symptom of advanced disease, and these patients often die within one year. However, some of these patients have a single lung metastasis or, although there are several metastases, they are confined to one side of the lung. In patients with radical primary tumors and no other metastatic lesions found in other parts of the body, aggressive surgical treatment of lung metastatic lesions is still expected in many patients.