CTICasesGrade 3 Blunt Traumatic Aortic Injury
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Imaging findings
Initial chest CT shows a subtle focal contour deformity of the anterior aortic wall. Follow-up CT three days later demonstrates progression with an outpouching of contrast on both the anterior and dorsal walls of the greater curvature, associated with adjacent thrombus formation, consistent with a pseudoaneurysm.
Key takeaways
Blunt traumatic aortic injuries are graded according to the Society for Vascular Surgery (SVS) classification. Grade 1 represents an intimal tear, Grade 2 is an intramural hematoma, Grade 3 is a pseudoaneurysm, and Grade 4 is a free rupture. Higher-grade injuries (Grade 3 or 4) are typically managed with endovascular stent grafts (TEVAR) rather than conservative therapy.
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