Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prominent heart size and cardiomediastinal contours are similar to the prior exam . Heterogeneous opacity along the medial right lung base has increased and may represent aspiration or infection . Small left basilar opacity is similar to prior . No substantial pleural effusion or pneumothorax . No radiopaque foreign body .
    OUTPUT:
    
Increased medial right base opacity , compatible with aspiration or infection .