Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is unchanged . Mediastinal and hilar contours are unremarkable . The lungs are well inflated without evidence for pulmonary consolidation or pulmonary edema . No pleural effusion or pneumothorax is seen . There are degenerative changes in the thoracic spine .
    OUTPUT:
    
No evidence for acute cardiopulmonary abnormalities .