title: Congenital absence of pulmonary valve associated with tetralogy of Fallot: diagnosis by 2-dimensional echocardiography.
mesh_terms: D004452:Echocardiography / Q000379:methods*; D006349:Heart Valve Diseases / Q000151:congenital / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011664:Pulmonary Valve / Q000002:abnormalities*; D013771:Tetralogy of Fallot / Q000150:complications / Q000175:diagnosis*