Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is persistent right lower lung opacity , which appears slightly more confluent since prior study , and is supposed for aspiration versus early developing pneumonia . Moderate cardiomegaly is stable . No pleural effusions seen .
    OUTPUT:
    
Right lung base opacity , can not exclude aspiration versus developing pneumonia .