Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains moderately enlarged . Lung volumes are low . Mediastinal contours are unremarkable . There is mild pulmonary vascular congestion . Patchy bibasilar airspace opacities are noted , and could reflect atelectasis though aspiration is not excluded . There are small bilateral pleural effusions . No pneumothorax is identified . Dextroscoliosis of the thoracolumbar spine is re - demonstrated .
    OUTPUT:
    
Mild pulmonary vascular congestion and small bilateral pleural effusions . Bibasilar airspace opacities could reflect atelectasis or aspiration .