15
Mediastinum
3.4
Superior mediastinum (content is described ventrodorsally)
8
• 1 Thymus and its vessels and lymphatic drainage 2 Origin of the sternothyroid and sternohyoid • 3 Internal thoracic artery and vein and their branches and tributaries • 4 Superior vena cava and its tributaries • 5 Phrenic nerves and pericardiacophrenic vessels • 6 Aortic arch and its branches • 7 Trachea to its bifurcation • 8 Oesophagus • 9 Vagus nerve 9.1 Cardiac branches • 9.2 Left recurrent laryngeal nerve • 10 Right and left sympathetic trunk 11 Cardiac nerves from sympathetic trunk • 12 Azygos vein and accessory hemi-azygos vein 13 Thoracic duct 14 Tracheobronchial and paratracheal lymph nodes 15 Juxtaoesophageal nodes 16 Longus colli
7 4 6 1 5
3
7 3 1
9
5
8
4
6
10
6 7
5 12
9
9 8
9.2
T2
13 10
Transverse section at the level of T2 (inferior view)
Anterior inferior mediastinum
• 1.1 Internal thoracic artery and vein and their branches and tributaries 1.2 Sternopericardiac ligaments 1.3 Parasternal and prepericardial lymph nodes • 1.4 Transversus thoracis Middle inferior mediastinum
• 2.1 Heart in the pericardium • 2.2 Ascending aorta • 2.3 Pulmonary trunk • • •
2.3
1.4 1.1
2.9 2.6 1.1 2.1
3.3
2.4 Superior vena cava 3.2 2.5 Inferior vena cava 3.5 2.6 Phrenic nerves 3.4 2.7 Pericardiacophrenic vessels 2.8 Cardiac plexus 2.9 Pulmonary veins 2.10 Main bronchi 2.11 Lateral pericardial lymph nodes
T6
2.1
3.1 3.6 3.4
Transverse section at the level of T6 (inferior view)
Posterior inferior mediastinum
• 3.1 Thoracic aorta • 3.2 Oesophagus • 3.3 Oesophageal plexus – the anterior and posterior vagal trunk from both vagus nerves • 3.4 Sympathetic trunk, n. splanchnicus major, minor et imus 3.5 Thoracic duct • 3.6 Azygos vein, hemi-azygos and accessory hemi-azygos vein
2.2 2.10 3.2 3.3 3.1 3.4
and its tributaries 3.7 Prevertebral and juxtaoesophageal lymph nodes
551