Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal radiograph of the chest demonstrates a new opacification of the right lung base , which could represent aspiration , however an infectious process can not be excluded . The left lung is grossly clear . There is no evidence of pleural effusion , pneumothorax , or pulmonary edema . The heart size is unchanged since the prior study .
    OUTPUT:
    
Right lung base opacification could represent aspiration or an infectious process in the appropriate clinical setting . The above findings were discussed with Dr . ___ by Dr . ___ ___ telephone at ___ at the time of discovery .