Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Elevation of the right hemidiaphragm is of unknown chronicity . There is additional right basilar opacity which could reflect compressive atelectasis . Patchy left basilar opacity may also reflect additional site of atelectasis . Heart size is difficult to assess but is at least mildly enlarged . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is not engorged . There is no pneumothorax or pleural effusion . Moderate multilevel degenerative changes are noted in the imaged thoracolumbar spine .
    OUTPUT:
    
Age indeterminate elevation of the right hemidiaphragm . Bibasilar atelectasis .