Presentation
History of recent trauma with chest pain.
Patient Data
Age: 30 years
Gender: Male
From the case:
Mach effect - mimicking pneumomediastinum
Download
Info

A lucent line between the right cardiac border and adjacent lung parenchyma suggests a mach effect.
Case Discussion
Mach effect is an optical effect at the margin between areas of slightly different density and may mimic pneumomediastinum.