Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The cardiac silhouette size is mildly enlarged . Elevation of the right hemidiaphragm appears chronic . The mediastinal and hilar contours are unremarkable . There is crowding of the bronchovascular structures without overt pulmonary edema . Mild atelectasis is seen in the lung bases without focal consolidation . No pleural effusion or pneumothorax is detected . There are moderate multilevel degenerative changes seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .