1. Young Man With Acute Chest Pain
Hsiang-Wen Liu, MD, MS, Pen-An Liao, MD 
Annals of Emergency Medicine 
Volume 73, Issue 1, Pages e1-e2 (January 2019)
DOI: /j.annemergmed
Copyright © 2018 American College of Emergency Physicians Terms and Conditions

2. Figure 1
Chest radiograph showing pneumomediastinum (arrows) and subcutaneous emphysema at the bilateral lower neck (arrowheads).
Annals of Emergency Medicine  , e1-e2DOI: ( /j.annemergmed )
Copyright © 2018 American College of Emergency Physicians Terms and Conditions

3. Figure 2
CT of the chest, demonstrating air in the spinal canal (arrow).
Annals of Emergency Medicine  , e1-e2DOI: ( /j.annemergmed )
Copyright © 2018 American College of Emergency Physicians Terms and Conditions

4. Figure 3
CT of the chest, revealing air in a right intervertebral foramen at the cervical level (arrow).
Annals of Emergency Medicine  , e1-e2DOI: ( /j.annemergmed )
Copyright © 2018 American College of Emergency Physicians Terms and Conditions