CTICasesSawn-Off Graft Side Branch mimicking Pseudoaneurysm
Imaging findings
Post-operative CT angiography shows a Hemiarch repair graft with a small, blind-ending, contrast-filled out-pouching (pseudo-pseudoaneurysm) at the site of a sawn-off side branch of the Hemashield graft. A frozen elephant trunk stent is visible in the descending aorta.
Key takeaways
Multi-arm vascular grafts (e.g., Hemashield) are used in complex aortic reconstructions. Unused or temporary side arms (often used for cardiopulmonary bypass cannulation or antegrade cerebral perfusion) are cut and oversown by the surgeon. Post-operative imaging can demonstrate these blind-ending outpouchings, which should not be confused with active pseudoaneurysms.
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