1. How to Find the Limit Between Station 2 and Station 4 During Mediastinoscopy? 
Francesco Leo, MD, Nicolas Venissac, MD, Daniel Pop, MD, Sabrina Khelef, MD, Jérôme Mouroux, MD 
The Annals of Thoracic Surgery 
Volume 81, Issue 3, Pages (March 2006)
DOI: /j.athoracsur
Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

2. Fig 1
The distance from the sternal notch and the upper aortic arch is assessed by computed tomographic scan. To determine the distance to apply during mediastinoscopy (the surgical station 2 lower limit) we subtract 20 mm.
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

3. Fig 2
The distance defined as surgical station 2 lower limit is reported on the upper valve of the video mediastinoscope by a strip. When the mediastinoscope is inserted through the cervical incision, the strip is at the level of the sternal notch and the instrument has a lateral deviation of about 45°, the point of contact with the mediastinum of the biopsy forceps is the limit between stations 2 and 4.
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions