CTICasesSubvalvular pseudoaneurysm following TMVR and LAMPOON procedure
Imaging findings
Cardiac CTA following transcatheter mitral valve replacement (TMVR) and a LAMPOON procedure (laceration of the anterior mitral leaflet) shows a subvalvular pseudoaneurysm at the LV base communicating with the left ventricle, which was successfully treated with two Amplatzer vascular plugs to resolve a paravalvular leak.
Key takeaways
The LAMPOON procedure is designed to prevent LVOT obstruction during TMVR by lacerating the anterior mitral leaflet. Subvalvular pseudoaneurysms or leaks can occur post-procedure and can be successfully managed percutaneously using vascular plugs.
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