Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to ___ chest radiograph , lung volumes are low which results in exaggeration of heart size and pulmonary vascular markings . There are no opacities nor nodules seen . No pleural effusion nor pneumothorax seen . No acute bony abnormalities .
    OUTPUT:
    
1 . No opacities , nodules , pleural effusions , nor pneumothorax seen . No radiographic evidence of pneumonia or infection .