Flashcards in Mediastinum Deck (4)
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Space between pleural cavities in the thorax
Boundaries:
- Lateral: pleural cavities
- Anterior: sternum
- Posterior: vertebral column
Mediastinum
1
Divisions
Superior
- trachea, esophagus, thymus, phrenic nerve, Azygous vein, SVC, brachiocephalic artery & vein, aortic arch, left common carotid artery, left subclavian artery & thoracic duct
- aortic arch aneurysm, esophageal perforation (from endoscopy or invading malignancy), traumatic rupture of trachea
Anterior
- thymus, lymph nodes, fats, connective tissue
- Thymoma (associated with myasthenia gravis, RBC aplasia), thyroid mass, germinal cell neoplasm, lymphoma
Middle
- heart, pericardium, phrenic nerve, ascending aorta, SVC, IVC, coronary artery & vein
- pericardial cysts, branchiogenic cysts, sarcoidosis
Posterior
- descending aorta, esophagus, thoracic duct, azygous vein, splanchnic nerve, vagus nerve, sympathetic trunk
- ganglioneuromas, neuroblastomas, esophageal diverticula or neoplasms
2
Fetal structures
R & L umbilical arteries
L umbilical vein
Ductus venosus
Foramen ovale
Ductus arteriosus
3
