Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to chest radiograph from the same day , low lung volumes . Central opacities , slightly asymmetrically worse on the right , can be asymmetric edema or pneumonia given the history of aspiration . Mild cardiomegaly . No pleural effusions or pneumothorax . Severe S shaped scoliosis .
    OUTPUT:
    
Central asymmetric opacities can be asymmetric edema or right - sided aspiration pneumonia with superimposed edema . This has slightly progressed .