Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear opacities at bilateral bases are similar to prior studies and likely resent represent chronic fibrosis or scarring . Opacities overlying the spine and heart on the lateral view are suspicious for a lower lobe and potentially lingular or right middle lobe pneumonia without definite correlate on the frontal radiograph . These were not present on remote prior plain film . There is no pulmonary edema , pneumothorax , or pleural effusion . Large bilateral bullae are unchanged .
    OUTPUT:
    
1 . Opacities seen the lateral view are suspicious for pneumonia . 2 . Unchanged large bilateral bullae .