Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly reduced . Heart size remains mildly enlarged . The aorta is mildly tortuous and calcified . Crowding of bronchovascular structures is likely due to the presence of low lung volumes . Increased patchy opacities are noted within the lung bases , more so on the right . No pleural effusion or pneumothorax is present . There are moderate degenerative changes noted throughout the imaged thoracolumbar spine . Cholecystectomy clips are noted in the right upper quadrant of the abdomen . The osseous structures are diffusely demineralized .
    OUTPUT:
    
Increased patchy bibasilar opacities , more apparent on the right . This may reflect worsening atelectasis in the setting of lower lung volumes , but aspiration or infection can not be excluded .