1
.
| Superior trunk brachial plexus |
2
.
| Phrenic nerve |
3
.
| Anterior scalene muscle |
4
.
| Upper pointer: Vagus nerve Lower pointer: Recurrent laryngeal nerve |
5
.
| Fibrous remnant of cervical portion of thymus |
6
.
| Right subclavian artery |
7
.
| Mediastinal pleura (cut and reflected) |
8
.
| Cardiac plexus |
9
.
| Right brachiocephalic vein |
10
.
| Internal thoracic artery (displaced posteriorly) |
11
.
| Fascia enclosing thymus |
12
.
| Pericardiacophrenic artery |
13
.
| Superior vena cava |
14
.
| Left internal jugular vein |
15
.
| Left common carotid artery |
16
.
| Vagus nerve |
17
.
| Thoracic duct |
18
.
| Upper pointer: Subclavian artery Lower pointer: Subclavian vein |
19
.
| Rib I |
20
.
| Upper pointer: Left brachiocephalic vein Lower pointer: Internal thoracic vein |
21
.
| Thymus (right lobe) |
22
.
| Thymic branch internal thoracic artery |
23
.
| Thymus (left lobe) |
24
.
| Superior sternopericardial ligament |
25
.
| Pericardium |