Presentation
Work up for neck trauma.
Patient Data
Age: 30 years
Gender: Male
From the case:
Mach effect - mimicking odontoid fracture
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A smooth lucent line is seen at the base of the odontoid process, inferring mach effect.
Case Discussion
A mach effect is an optical effect at the margin between areas of slightly different density.
In this image, and may mimic odontoid fracture.