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Updated: Apr 24, 2026

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
Published on: May 26, 2023
Robotic resection of dual accessory mitral valve tissue in an adult patient
Shojiro Yamaguchi1, Norihiko Ishikawa1, Shigeyuki Tomita1
1Department of General and Cardiothoracic Surgery, Kanazawa University, Kanazawa, Japan.
Abstract:
The presence of isolated accessory mitral valve tissue (AMVT) is extremely rare in adults. We successfully performed robot-assisted resection of dual AMVT that was attached to the papillary muscle and anterior mitral leaflet. Echocardiography was invaluable for identifying the most suitable approach. The short-axis view on echocardiography revealed the precise location where the AMVT was attached. The robotic operation enabled fine visualization; we clearly observed the AMVT and removed its entire extra structure. The patient recovered well and was discharged 3 days after the operation. To the best of our knowledge, this is the first report of successful robotic AMVT resection.
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