Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Degenerative changes are seen throughout the thoracic spine . There is no loss of vertebral body height . No evidence of subluxation . Linear opacities at the right lung base likely reflect atelectasis . No focal consolidations worrisome for infection . Stable appearance of the cardiomediastinal silhouette with calcifications of the aortic knob . Coronary artery stent is noted . No pulmonary edema . No pleural effusion . No pneumothorax .
    OUTPUT:
    
1 . Degenerative changes within the thoracic spine without loss of vertebral body height or subluxation . 2 . Atelectasis at the right base .