%0 Journal Article %T Jellyfish %A Carolina Escudero %A Elizabeth Sherwin %A Hideyuki Kato %A Martin Hosking %A Sanjiv K. Gandhi %J World Journal for Pediatric and Congenital Heart Surgery %@ 2150-136X %D 2018 %R 10.1177/2150135116668335 %X Accessory mitral valve tissue (AMVT) causing left ventricular outflow tract obstruction (LVOTO) is rare. We report a case of AMVT causing severe LVOTO resulting in acutely progressive symptoms of near-collapse. Urgent surgical resection eliminated the patient¡¯s life-threatening symptoms. AMVT should be considered among potential LVOTO diagnoses, and early surgical intervention may be required %K congenital heart disease %K accessory mitral valve tissue %K left ventricular outflow tract obstruction %K mitral valve repair %U https://journals.sagepub.com/doi/full/10.1177/2150135116668335