Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is a left lower lobe opacity which appears new since ___ and concerning for pneumonia . There also bibasilar linear opacities which appear unchanged from comparison study and likely represents scarring . There is no pleural effusion or pneumothorax . Cardiomediastinal silhouette is stable .
    OUTPUT:
    
Left lower lobe opacity is new since chest radiograph ___ and compatible with pneumonia given the clinical history .