Mediastinal Anatomy

Thymus Paratracheal

Right Lung

2. Posterior segment of upper lobe

3. Anterior segment of upper lobe 6. Superior segment of lower lobe

Left Lung

1+2 Apicoposterior segment of upper lobe

3. Anterior segment of upper lobe 6. Superior segment of lower lobe

Internal Mammary Artery Phrenic Nerve

1. Latissimus dorsi muscle

2. Thoracodorsal artery

3. Subscapularis muscle

4. Pectoralis minor muscle

5. Pectoralis major muscle

6. Right lung

7. Phrenic nerve

8. Internal thoracic artery and vein

9. Superior vena cava

10. Sternum (body)

11. Thymus

12. Ascending aorta

13. Recurrent laryngeal nerve

14. Aorticopulmonary window

15. Left lung

16. Intercostal muscle

17. Teres major muscle

18. Infraspinatus muscle

19. Scapula

20. Rhomboid major muscle

21. Rib

22. Right main stem bronchus

23. Trapezius muscle

24. Erector spinae muscle

25. Spinal cord

26. Thoracic vertebra

27. Thoracic duct

28. Esophagus

29. Descending aorta

30. Left main stem bronchus

31. Teres minor muscle

32. Tracheobronchial lymph nodes

33. Middle mediastinal lymph nodes

34. Paratracheal lymph nodes

35. Anterior mediastinal lymph nodes

36. Parasternal lymph nodes

37. Paraesophageal lymph nodes

38. Lymph nodes of the aorticopul-monary window

39. Prevertebral lymph nodes

40. Intercostal lymph nodes

Mediastinal Nodes The Coronary ArteryParaesophageal Lymph Node

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