Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip is slightly low lying and terminates approximately 2 .8 cm from the carina . Low lung volumes are noted . The heart size is mildly enlarged . Aortic knob is calcified . There is crowding of the bronchovascular structures . Mild pulmonary vascular congestion appears to be present . Opacity within the retrocardiac region could reflect atelectasis though infection or aspiration can not be excluded . A possible trace left pleural effusion is noted . The right lung is free of consolidation . No right - sided pleural effusion is present . There is no pneumothorax . S - shaped scoliosis of the thoracolumbar spine is present .
    OUTPUT:
    
1 . Low lung volumes . Left basilar opacity may reflect atelectasis though aspiration or infection is not excluded . 2 . Mild pulmonary vascular congestion . 3 . Endotracheal tube is slightly low lying , terminating 2 .8 cm from the carina .