Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is somewhat limited by patient positioning . Cardiac and mediastinal contours are unchanged . The heart size appears borderline enlarged . Mild pulmonary vascular congestion is present . Streaky opacities in the lung bases likely reflect areas of atelectasis , with no focal consolidation . Blunting of the right costophrenic angle may suggest a trace pleural effusion . No pneumothorax is identified .
    OUTPUT:
    
Limited exam . Mild pulmonary vascular engorgement and patchy bibasilar atelectasis . Possible trace right pleural effusion .