title: Flail posterior mitral leaflet: an unusual cause of mitral regurgitation in childhood.
mesh_terms: D002648:Child; D002815:Chordae Tendineae / Q000503:physiopathology; D004452:Echocardiography; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000503:physiopathology*; D008944:Mitral Valve Insufficiency / Q000175:diagnosis / Q000209:etiology*