Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and cardiac valve replacement . Mild basilar atelectasis is seen without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac silhouette is top - normal to mildly enlarged . There may be prominence of the main pulmonary artery which can be seen in the setting of pulmonary arterial hypertension .
    OUTPUT:
    
Prominent main pulmonary artery can be seen in the setting of pulmonary arterial hypertension . No focal consolidation .