https://pmc.ncbi.nlm.nih.gov/articles/PMC4881326/
Spontaneous Retropharyngeal and Mediastinal Emphysema - PMC
A 14-year-old girl with no significant medical history presented at Emergency Department with sore throat and odynophagia after one episode of nonviolent...
mediastinal emphysemaspontaneousretropharyngealpmc