title: Unusual angiographic pattern of a muscular ventricular septal defect.
mesh_terms: D000293:Adolescent; D000790:Angiocardiography; D006328:Cardiac Catheterization; D006345:Heart Septal Defects, Ventricular / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008722:Methods