Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The thoracic inlet is partially obscured by the patient 's chin , similar to the prior study . Heart size is within normal limits . Aortic calcifications are again seen . Mediastinal and hilar contours are stable . Linear opacities at bilateral lung bases are similar to prior , compatible with atelectasis or scarring . No pulmonary consolidation is seen . There is no evidence for pulmonary edema or pleural effusion . dextroconvex thoracic scoliosis and thoracic endplate degenerative changes are again seen .
    OUTPUT:
    
No evidence for pneumonia .