Pulmonary hypertension secondary to chronic upper airway obstruction.
D000234:Adenoids; D006328:Cardiac Catheterization; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology*; D006984:Hypertrophy; D008297:Male; D014066:Palatine Tonsil; D010608:Pharyngeal Diseases / Q000150:complications*; D011660:Pulmonary Heart Disease / Q000209:etiology*; D012131:Respiratory Insufficiency / Q000150:complications*