This is a cardiac MRI of a patient with asymmetric hypertrophic cardiomyopathy. There is associated systolic anterior motion (SAM) of the anterior mitral leaflet, which contribute to left ventricular outflow tract (LVOT) obstruction. Hypertrophic cardiomyopathy is a heterogeneous group of diseases related to sarcomere gene mutations and affects one of every 500 adults. It is the most common cause of sudden death in young athletes. Asymmetric hypertrophic cardiomyopathy is the most common morphologic variant of this disease. This MRI was requested for evaluation prior to contemplated myomectomy.