1. Young Man With Lump in His Neck Michael J. Barrett, MB, MRCPI, Adam O’Brien, MBBS Annals of Emergency Medicine Volume 67, Issue 3, (March 2016) DOI: 10.1016/j.annemergmed.2015.06.032 Copyright © 2016 American College of Emergency Physicians Terms and Conditions Terms and Conditions

2. Figure 1 Annals of Emergency Medicine 2016 67, DOI: (10.1016/j.annemergmed.2015.06.032) Copyright © 2016 American College of Emergency Physicians Terms and Conditions Terms and Conditions

3. Figure 2 Annals of Emergency Medicine 2016 67, DOI: (10.1016/j.annemergmed.2015.06.032) Copyright © 2016 American College of Emergency Physicians Terms and Conditions Terms and Conditions