通过对218例转移性肺癌的临床及X线分析,指出转移性肺癌主要在肺泡内生长,因此,与原发性支气管肺癌相比,其呼吸道症状不明显,咳嗽相对较轻,咯血少见,纤维支气管镜检查多正常,痰脱落细胞阳性率低。x线表现可分为单发结节型、多发结节型、结节浸润型、空洞型、淋巴管炎型和淋巴结型。x线表现与转移途径有关,除绒癌外,多数与病理类型无确切关系。 Through clinical and X-ray analysis of 218 cases of metastatic lung cancer, it was pointed out that metastatic lung cancer mainly grows in the alveoli. Therefore, compared with primary bronchial lung cancer, its respiratory symptoms are not obvious, cough is relatively mild, and hemoptysis is rare. Bronchoscopy was normal, and the positive rate of sputum exfoliation was low. X-ray findings can be divided into single nodular type, multiple nodular type, nodular infiltration type, empty type, lymphangitis type and lymph node type. The x-ray findings are related to the metastatic route. Except for choriocarcinoma, most of them are not related to pathological types.