Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiographs were obtained . The patient is rotated . Bilateral right greater than left lower lobar opacities are re - demonstrated and in the setting of infectious symptoms multifocal pneumonia remains a consideration although aspiration or atelectasis may be present . Multiple old rib fractures are demonstrated on the left . The heart and mediastinal contours are unchanged .
    OUTPUT:
    
Bibasilar opacities could represent multifocal pneumonia , aspiration or atelectasis .