Table 6. Lymph nodes in the mediastinum detected by ultrasound in 20 human cadavers (158,159).

Mediastinal region	Proportion of cadavers with detectable lymph nodes	Number of lymph nodes (detected by ultrasound)*	Lymph node size (determined by ultrasound) (mm)#	Lymph node size (morphometric measurement) (mm)#
Paratracheal	17/20	1.9±1.0	11×6	11×6
Aorto-pulmonary window	18/20	1.7±0.7	11×5	11×4

*, The number of lymph nodes is given as mean ± standard deviation; ^#, the lymph node size is given as the mean longitudinal diameter × mean transversal diameter.