本文报告肺部转移瘤２１例的外科治疗。大部分患者无明显临床症状，均在原发肿瘤切除后定期随访中，经胸部透视和拍胸片后发现。部分病人有咳嗽、咯血、胸闷和胸痛症状。本组无手术死亡，术后１、３、５年生存率分别为８３．１％、４９．４％、３８．７％。本文讨论了肺转移瘤的诊断、治疗和预后。 This article reports the surgical treatment of 21 cases of pulmonary metastases. Most of the patients had no obvious clinical symptoms and were found after regular resection of the primary tumor. They were found after chest fluoroscopy and chest radiographs. Some patients have symptoms of cough, hemoptysis, chest tightness, and chest pain. There were no operative deaths in this group. The 1-, 3-, and 5-year survival rates were 83.1%, 49.4%, and 38.7%, respectively. This article discusses the diagnosis, treatment, and prognosis of lung metastases.