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Nodes
Right upper
(N = 113)
Right lower
(N = 108)
Left upper
(N = 113)
Left lower
(N = 68)
Tracheobronchial
16
14.3
11.8
Pretracheal
13.8
6.7
14.3
Paratracheal
15.9
11.1
Subcarinal
6.3
22.2
2.4
18.5
Para-aortic
16.7
Subaortic
15.1
19.1
Numbers are expressed in %
Adapted from Ogata and Naruke 1986
Pattern of mediastinal LN metastases