Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes exaggerate the cardiac size , although it is probably slightly enlarged . The aorta is unfolded . Left lower lobe opacity corresponds to known pulmonary nodules . Additional left perihilar nodule is also noted , better assessed on the recent chest CT . There is no evidence of pneumonia or pleural effusion . Pulmonary edema has improved substantially since the prior study .
    OUTPUT:
    
No evidence of pneumonia or pleural effusion . Multiple faint opacities consistent with the patient 's metastatic chest nodules , better assessed on the recent chest CT .