CTICasesTranscatheter Aortic Valve Replacement (TAVR) Complications: Pseudoaneurysm and Valve Thrombosis
Imaging findings
CT angiography following transcatheter aortic valve replacement demonstrates a pseudoaneurysm at the distal aspect of the CoreValve stent frame, communicating with the aortic root. A follow-up CT reveals new, hypoattenuating thickening of the prosthetic valve leaflets along the left and non-coronary cusps extending outside the stent frame, consistent with subclinical leaflet thrombosis.
Key takeaways
Transcatheter aortic valve replacement can be associated with various post-procedural complications, including pseudoaneurysm formation and prosthetic valve thrombosis. Subclinical leaflet thrombosis is characterized by hypoattenuating leaflet thickening and restricted leaflet motion, which typically responds well to anticoagulation but presents a clinical dilemma in patients with concurrent contraindications like a pseudoaneurysm.
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