Surgical Treatment of Accessory Mitral Valve Tissue in a Toddler
Journal: Annals of Thoracic Surgery Short Reports
Year: 2025

Accessory mitral valve tissue causing left ventricular outflow tract obstruction is exceedingly rare in children.We present the surgical treatment of a toddler with severe obstruction due to type IIa accessory mitral valve tissue.Intraoperatively, the accessory tissue resembled a duplicated mature mitral valve leaflet.Surgical treatment included a septal myectomy and imbrication of the accessory tissue without leaflet resection, which successfully relieved the obstruction and preserved valve fun