Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are multiple rounded focal opacities compatible with known metastatic disease . The largest of which measures approximately 4 cm in the left lower lobe . No focal consolidation to suggest an acute infectious process is identified . The cardiomediastinal silhouette is unchanged . There is no pleural effusion or pneumothorax . Dextroscoliosis of the thoracic spine is noted .
    OUTPUT:
    
Diffuse rounded opacities compatible with metastatic disease measuring up to 4 cm in the left lower lobe . No acute infectious process .