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CT angiogram (CTA) in a young female patient who was involved in a high speed road traffic accident. (a) Sagittal oblique multiplanar reformat of the CTA showing the subtle pseudo-aneurysm at the aortic isthmus (black arrow). (b) True axial image showing the subtle aneurysm (white arrow), which is only visible on a few slices. In major trauma, the direct signs of aortic injury can often be subtle and so it is imperative that the aorta is carefully assessed.
