Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is enlarged . There is no pleural effusion or pneumothorax . There is increased opacity of the right lung bases , seen posteriorly on lateral view , which may represent a developing pneumonia . There is upper lobe redistribution of the vessels . There is no acute osseous abnormality .
    OUTPUT:
    
Findings concerning for developing right lower lobe pneumonia .