Methods By using the Chamberlain procedure, biopsy was performed in 32 cases of enlarged mediastinal lymph nodes with unknown causes or mediastinal space-taking lesions, which were found by CT scans.

• 方法 采用左前纵隔切开入路 ,对 32例胸部CT等检查发现的不明原因纵隔淋巴结肿大或纵隔占位进行活检术。