Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is significant rightward rotation of the patient on the current radiograph . There are low lung volumes . Allowing for changes due to these factors , the cardiomediastinal silhouettes are within normal limits . Right lung base airspace opacities may represent developing pneumonia or sequelae of aspiration in the appropriate clinical setting . Retrocardiac opacity may represent subsegmental atelectasis . Otherwise , the lungs are clear with mild crowding of bronchovascular structures . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Low lung volumes and a limited study due to patient positioning . Within this limitation , right lung base airspace opacities may represent pneumonia or sequelae of aspiration in the appropriate clinical setting . Note CTA obtained subsequently shows extensive pulmonary emboli , right lower lobe as well as possible pneumonia .