Annals of Thoracic and Cardiovascular Surgery
Online ISSN : 2186-1005
Print ISSN : 1341-1098
ISSN-L : 1341-1098
Case Report
Left Atrial Mitral Valve Chordae Which Disturbed the Mitral Leaflet Motion and Induced Mitral Regurgitation
Toru KamedaTomohiro Mizuno Kota KawadaTsubasa YoshikawaKoichi SugiyamaYuzo KatayamaTakeshiro Fujii
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2025 Volume 31 Issue 1 Article ID: cr.25-00030

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Abstract

Left atrial mitral valve chorda (LAMVC) is a rare congenital cardiac anomaly. The abnormal tissue band, like a mitral valve chorda, is attached to the left atrial wall on one side and mostly to the mitral valve leaflet on the other side and the band sometimes disturbs the mitral leaflet motion, followed by mitral regurgitation (MR). We encountered a case with a LAMVC which originated from a papillary muscle and attached to the posterior mitral annulus over the posterior leaflet and caused MR due to restricted mitral leaflet motion.

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© 2025 The Editorial Committee of Annals of Thoracic and Cardiovascular Surgery

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