title: Two-dimensional echocardiographic evidence of quadricuspid pulmonary valve.
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D004452:Echocardiography / Q000379:methods*; D006333:Heart Failure / Q000473:pathology; D006338:Heart Neoplasms / Q000473:pathology; D006689:Hodgkin Disease / Q000473:pathology; D006801:Humans; D008297:Male; D011664:Pulmonary Valve / Q000002:abnormalities* / Q000473:pathology