Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube is low lying , terminating approximately 1 .3 cm from the carina . Left - sided dual - chamber pacemaker device is noted with leads terminating in the right atrium and right ventricle . Moderate cardiomegaly is present . The aorta is tortuous . Widening of the superior mediastinum may be due to low lung volumes and supine technique . There is mild pulmonary vascular congestion . Patchy opacities in the lung bases may reflect areas of atelectasis though infection or aspiration can not be excluded . No large pleural effusion or pneumothorax is seen , however subtle lucency within the left lung base could suggest a small left pneumothorax . No displaced fractures are seen .
    OUTPUT:
    
1 . Low lying endotracheal tube terminating approximately 1 .3 cm from the carina . 2 . Mild pulmonary vascular congestion . 3 . Widened superior mediastinum may be due to supine positioning and AP technique . Consider CT with contrast for further assessment if there is concern for vascular injury . 4 . Patchy opacities within the lung bases , potentially atelectasis but aspiration or infection can not be excluded .