Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well inflated bilaterally with subtle opacity adjacent the right heart border on frontal view and projecting over the lower thoracic vertebra on the lateral view . These findings may represent a possible developing pneumonia . There is no pleural effusion or pneumothorax . Pleural surfaces are unremarkable . The aorta is stably tortuous . The cardiomediastinal silhouette is unchanged and within normal limits . There are stable multilevel degenerative changes seen along the thoracic spine .
    OUTPUT:
    
Subtle lower lung and posterior opacities may represent an early developing pneumonia .