CTICasesMinimal Aortic Injury Mislabeled as Dissection
Imaging findings
A pedestrian struck by a bus has an aortic abnormality repeatedly described on follow-up imaging as an intimal flap and dissection. CT shows an intimal defect with additional defects and areas of layering thrombus, representing a traumatic minimal aortic injury from a severe shear mechanism rather than a classic dissection.
Key takeaways
Correct terminology matters: a traumatic aortic shear injury with intimal defects and adherent thrombus is a minimal aortic injury, not a dissection in the classic sense of an intimal disruption from hypertension. Although management may not change, mislabeling it a dissection and propagating that on follow-up reports is inaccurate.
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