Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes , which accentuate the bronchovascular markings . There is subtle left basilar retrocardiac opacity , which most likely relates to atelectasis . If patient able , dedicated PA and lateral views would be helpful further assessment . No large pleural effusion is seen , however , there is slight blunting of the left costophrenic angle and trace pleural effusion may be present . No evidence of pneumothorax is seen . The aorta is calcified and tortuous . The cardiac silhouette is top - normal , likely exaggerated by AP technique .
    OUTPUT:
    
There are low lung volumes , which accentuate the bronchovascular markings . There is subtle left basilar retrocardiac opacity , which most likely relates to atelectasis . If patient able , dedicated PA and lateral views would be helpful further assessment . No large pleural effusion is seen , however , there is slight blunting of the left costophrenic angle and trace pleural effusion may be present . No evidence of pneumothorax is seen . The aorta is calcified and tortuous . The cardiac silhouette is top - normal , likely exaggerated by AP technique .