Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated with evidence of COPD . Multiple focal airspace opacities throughout both lungs with predominance in the bilateral bases are compatible with known pulmonary metastases seen on the prior CT of ___ . Opacification at the left lower lobe may correspond to a known pulmonary nodule ; however , focal consolidation or pneumonia can not be excluded . No significant pleural effusion or pneumothorax is detected . The cardiomediastinal silhouette is within normal limits and unchanged . There is calcification at the aortic knob . A right Port - A - Cath is unchanged in position with the tip terminating in the proximal right atrium . The trachea is midline . There is no free air beneath the right hemidiaphragm . Focal airspace opacity in the left lower lobe may represent one of the patient 's multiple known pulmonary metastases . No definite consolidation concerning for pneumonia is detected , however , difficult to exclude in this setting .
    OUTPUT:
    
1 . Multiple faint focal airspace opacities likely correspond to known pulmonary metastases . 2 . No focal consolidation concerning for pneumonia is detected .