Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are unremarkable . The lungs demonstrate linear opacities at the left base likely representing subsegmental atelectasis or scarring . There are new patchy opacities over the left mid to lower lung , as well as the lateral left upper lung and left lung base , concerning for infection . There is no evidence of pleural effusions or pneumothoraces . The hilar and mediastinal contours are unremarkable .
    OUTPUT:
    
New patchy opacities in the left lung concerning for infection . If possible , lateral views would be helpful for further localization . No recent priors were available for comparison , so interval change of disease can not be assessed .