Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right cardiac border is not well seen but it seems clear that the heart is at least mildly enlarged . The aortic arch is partly calcified . The right lower hemithorax is opacified with balance mass effect and a substantial pleural effusion as well as parenchymal opacification . Elsewhere , the lungs appear clear . There is no pleural effusion on the left . Kyphotic curvature is exaggerated including mild wedging of three mid thoracic vertebral bodies which appears chronic . The bones appear demineralized .
    OUTPUT:
    
Opacification of the lower right hemithorax suggesting a pleural effusion , at least moderate in size , with coinciding atelectasis or possibly pneumonia involving the right middle and basilar portions of the lower lobe .