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Figure 1 Figure illustrating coronary angiograms in three children with hypertrophic cardiomyopathy. Diastolic frames are on the left and systolic frames on the right. Panel A = 6-year-old male with mid-left anterior descending artery (LAD) bridging and compression of its intramyocardial branches. Panel B = 13-year-old female with bridging of proximal posterior descending branch of the right coronary artery with complete compression of its septal branches. Panel C = Complete compression of septal branches of the LAD. This child had bridging of an obtuse marginal branch. Large arrows indicate sites of bridging of epicardial arteries and small arrows indicate compression of septal branches.