Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP chest radiograph . ET tube terminates 2 .2 cm above the diaphragm . Median sternotomy wires are intact . Mediastinal clips and mitral valve replacement are again noted . A transvenous pacer lead terminates in the right ventricle . There is probably a small left pleural effusion with retrocardiac atelectasis , though left lower lobe collapse can not be excluded . Large right hilum is chronic , but there are subtle opacities at the right base not present on ___ . Moderate cardiomegaly is unchanged . There is no pneumothorax .
    OUTPUT:
    
1 . ET tube tip terminates 2 .2 cm above the carina . 2 . New left lower lung opacification may represent left lower lobe collapse or retrocardiac atelectasis with a component of pleural effusion . If obtainable , PA and lateral views would be helpful .