Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine frontal views of the chest were obtained portably . Low lung volumes results in bronchovascular crowding . A large left pleural effusion with little aeration of left lung is worse than on ___ . Pulmonary vascular congestion is noted on the right . No large pneumothorax is seen . The patient is status post median sternotomy with surgical hardware and clips . The cardiac silhouette is obscured . A port ends in the right atrium , unchanged .
    OUTPUT:
    
Large left pleural effusion and pulmonary vascular congestion .