Image IQ: 20-year-old Male, Left Neck Pain

August 6, 2015

20-year-old male with no medical history presents with left-sided neck pain for 5 days.

A 20-year-old male with no medical history presents with left-sided neck pain for 5 days. Two days preceding neck symptoms, patient had a sore throat that resolved on its own. Patient reports having subjective fever one day prior to presentation. Click on the images to enlarge. 

What's your diagnosis?