ATS Lymph Node Stations

Lymph nodes measured by short axis.

NODE GROUP	STATION	UPPER LIMIT (mm)
Pretracheal	2R (right upper)	7
	2L (left upper)	7
	4R (right lower)	9
	4L (left upper)	9
Aorticopulmonary	5	9
Prevascular	6	8
Subcarinal	7	12
Paraesophageal	8	8
Inferior Pulmonary Ligament	9
Tracheobronchial	10L
Peribronchial	10R
Intrapulmonary	11
Internal Mammary	–
Paracardiac	14
Paravertebral	–

Lymphadenopathy: inflammatory, lymphoma or leukemia, metastasis, Sarcoidosis, Castleman’s Disease