But systematic mediastinal lymph node dissection should be performed in patients with lower lobe or right middle lobe cancer whether there is hilar or inferior carinal metastatic lymph node or not.

• 下叶及右中叶肺癌,无论有无肺门或隆凸下淋巴结转移,均应广泛清扫上、下纵隔淋巴结。