Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Heart size and cardiomediastinal contours are normal . Mildly increased right lung peribronchial markings are in keeping with known history of radiation therapy . The lungs are otherwise clear without focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
Mildly increased right lung peribronchial markings , consistent with known history of radiation therapy .