Dissection of sup. mediastinum 1. Thymus: it has atrophy and taken place by adipose tissue 2. Sup. vena cava brachiocephalic v: remove the thymus, clear up azygus v and inf thyroid v to drain to brachiocephalic v 3. Ant mediastinal lymph nodes: locates around large blood vessels of cardiac base 4. Aortic arch and its branches: attention to the origin of left laryngeal recurrent n 5. Phrenic n: trace from the neck root, clear up pericardiacophrenic blood esse eIs 6. Vagus n and its branches: left recurrent laryngeal n hook aortic arch and left one subclavian artery and ascending along the groove between trachea and esophagus 7. Pulmonary a and arterial ductal triangle: locate among phrenic n and left vagus n and pulmonary a clear up the arterial ligament
1. Thymus: it has atrophy and taken place by adipose tissue. 2. Sup.vena cava & brachiocephalic v: remove the thymus,clear up azygus v and inf.thyroid v to drain to brachiocephalic v. 3. Ant.mediastinal lymph nodes: locates around large blood vessels of cardiac base. 4. Aortic arch and its branches: attention to the origin of left laryngeal recurrent n. 5. Phrenic n:trace from the neck root, clear up pericardiacophrenic blood vessels. 6. Vagus n. and its branches: left recurrent laryngeal n hook aortic arch and left one subclavian artery and ascending along the groove between trachea and esophagus. 7. Pulmonary a and arterial ductal triangle: locate among phrenic n.and left vagus n.and pulmonary a.clear up the arterial ligament. Dissection of sup.mediastinum
Relations of aortic arch Anteriorly to the left sternum 1b ◆ Pleura Lung mus aortic arch ◆ Phrenic n superior left phrenic n vena cava o Pericardiophrenic vessels right phrenic ◆ Posteriorly& to the righ righ《)kyn Vagus n trachea left recurrent aryngeal n ◆ Trachea esophagus thoracic duct ◆ Esophagus rietal plet QL recurrant laryngeal n visceral pleura ◆ Thoracic duct ◆ Deep cardiac plexu Inf view of sup. mediastinum(at level T4
Relations of aortic arch Anteriorly & to the left Pleura Lung Phrenic n. Pericardiophrenic vessels Vagus n. Posteriorly & to the right Trachea Esophagus L.recurrant laryngeal n. Thoracic duct Deep cardiac plexus Inf.view of sup.mediastinum(at level T4)