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Mediastinal ln
This document describes the 10 different regions of mediastinal lymph nodes, including their anatomical locations and borders. It notes that prevertebral lymph nodes are only accessible through endoscopic ultrasound and not mediastinoscopy. Finally, it mentions conventional mediastinoscopy, extended mediastinoscopy, and endoscopic ultrasound as techniques to access different mediastinal lymph nodes.
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Mediastinal ln
- 1. Mediastinal LN DR/Hytham Nafady
- 2. 1. Highest mediastinalLNs Upper border: lower border or cricoid. Lower border: upper border of manubrium and clavicles. Medial border: medial edge of CCA. Lateral boder: first rib.
- 6. 2R. Right upperparatracheal LNs • Upper border: upper border of manubrium. • Lower border: intersection between lower border of left innominate vein and trachea. • Medial border: midline of the trachea.
- 9. 2L. Left upperparatracheal LNs • Upper border: superior border of the manuibrium. • Lower border: superior border of aortic arch. • Medial border: midline of the trachea.
- 12. 3. Prevascular &prevertebral LNs • Prevascular LNs (3A) are located anterior to the vessels. • Prevertebral (retrotracheal) LNs (3B) are located anterior to the spine. • Prevertebral LNs are not accessible through mediastnioscopy but only available through Endoscopic U/S.
- 15. 4R. Right lowerparatracheal LNs
- 17. 4L. Left lowerparatracheal LNs
- 20. 5. Subaortic LNs (aortopulmonary window LNs)
- 22. 6. para-aortic LNs • Anterior & lateral to the ascending thoracic aorta & aortic arch.
- 25. 7. Subcarinal LNs • Upper border: carina of the trachea. • Lower border: bronchus intermedius on the right and left lower lobe bronchus on the left.
- 27. 8. Paraesophageal LNs • Upper border: carinal LNs. • Lower border: diaphragm.
- 29. 9. Pulmonary ligamentLNs • Pulmonary ligaments are inferior extension of mediastinal pleural reflections that surround the hila. • Pulmonary ligaments LNs are located posterior and inferior to the inferior pulmonary veins.
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