Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously seen ill - defined peribronchial lower lobe opacity seen on lateral view has resolved . No new focal consolidation identified . There is linear atelectasis at the left lung base . There is no pleural effusion or pneumothorax . The heart is not enlarged . Mediastinal contour is normal .
    OUTPUT:
    
Resolved lower lobe infection .