Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is slightly limited by patient rotation . Heart size is within normal limits . The mediastinal contour is unremarkable . Lungs are hyperinflated with apparent emphysematous changes noted . Patchy ill - defined opacities are seen within the lung bases highly concerning for infection or aspiration . There may be a trace left pleural effusion . No pulmonary edema or pneumothorax is present . The osseous structures are diffusely demineralized with mild loss of height of several thoracic vertebral bodies .
    OUTPUT:
    
Patchy ill - defined bibasilar airspace opacities concerning for aspiration or infection . Probable trace left pleural effusion .