Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . The lungs are well expanded with mild peribronchial infiltrates in the lower lungs , which may be seen in bronchitis . Pulmonary vasculature is within normal limits . The upper abdomen is unremarkable .
    OUTPUT:
    
Lower lung peribronchial infiltrates which may be due to bronchitis .