Supraclavicular nodes 1.Low cervical, supraclavicular and sternal notch nodes From the lower margin of the cricoid to the clavicles and the upper border of the manubrium. The midline of the trachea serves as border between 1R and 1L. Superior Mediastinal Nodes 2-4 2R.Upper Paratracheal 2R nodes extend to the left lateral border of the trachea. From upper border of manubrium to the intersection of caudal margin of innominate (left brachiocephalic) vein with the trachea. 2L.Upper Paratracheal From the upper border of manubrium to the superior border of aortic arch. 2L nodes are located to the left of the left lateral border of the trachea. 3A.Pre-vascular These nodes are not adjacent to the trachea like the nodes in station 2, but they are anterior to the vessels. 3P.Pre-vertebral Nodes not adjacent to the trachea like the nodes in station 2, but behind the esophagus, which is prevertebral. 4R.Lower Paratracheal From the intersection of the caudal margin of innominate (left brachiocephalic) vein with the trachea to the lower border of the azygos vein. 4R nodes extend from the right to the left lateral border of the trachea. 4L.Lower Paratracheal From the upper margin of the aortic arch to the upper rim of the left main pulmonary artery #Anatomy #Radiology #Pulmonary #Thoracic #LymphNode #Map #IASLC #RadiologyAssistant
