Background: Over the years, radiological studies, especially CT scans of the chest, have been the mainstream methods used in the diagnosis of lung cancer with mediastinal metastases.

• 摘要由于影像学技术的进步，使得放射线诊断成为检查肺癌最常用的工具，但若要取得确定的组织切片，则需要侵入性的方式。