Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . In addition to multifocal linear opacities in the left mid and both lower lungs , and more confluent area of opacification is present in the right infrahilar region . . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities . Marked scoliosis is noted .
    OUTPUT:
    
Multifocal opacities in the left mid and bilateral lower lobes are likely due to atelectasis in the recent postoperative setting . Coexisting aspiration or pneumonia in the right infrahilar region is not excluded .