目的提高对多发薄壁空洞型肺转移癌的认识,避免误诊。方法结合5例多发薄壁空洞型肺内转移癌患者的临床资料,分析转移癌空洞的临床及影像学特点,诊断方法、鉴别诊断等。结果多发薄壁空洞型肺转移癌临床表现特异性差,影像学主要表现为多发性薄壁空洞,并常伴有结节,空洞形态不同于原发癌性空洞,有一定的独特性。结论多发薄壁肺内空洞型转移癌罕见,虽在影像学上有一定的特点,但与以空洞性病变为特征的肺部疾病易混淆,为避免误诊,应予重视。 Objective To improve the understanding of multiple thin-walled cavity lung cancer and avoid misdiagnosis. Methods The clinical data of 5 cases of multiple thin-walled cavity type lung metastasis cancer were analyzed. The clinical and imaging characteristics, diagnosis, differential diagnosis of metastatic cancer cavity were analyzed. Results The clinical manifestations of multiple thin-walled cavity-type lung metastases were poor. The imaging findings were mainly multiple thin-walled hollows and often accompanied with nodules. The hollow forms were different from the primary cancerous hollows and had certain unique features. Conclusions The rare cavity-type metastatic carcinoma of the thin-walled lung has some characteristics of imaging, but it is confused with lung diseases characterized by cavitary lesions. In order to avoid misdiagnosis, attention should be paid to it.