The ballooning mitral valve in patients with the "precordial honk" or "whoop".
D000293:Adolescent; D000328:Adult; D000790:Angiocardiography; D006328:Cardiac Catheterization; D002932:Cineangiography; D004562:Electrocardiography; D005260:Female; D006349:Heart Valve Diseases / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008943:Mitral Valve; D010701:Phonocardiography